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Anonymity describes situations where the acting person's identity is unknown. Anonymity may be created unintentionally through the loss of identifying information due to the passage of time or a destructive event, or intentionally if a person chooses to withhold their identity. There are various situations in which a person might choose to remain anonymous. Acts of
charity Charity may refer to: Common meanings * Charitable organization or charity, a non-profit organization whose primary objectives are philanthropy and social well-being of persons * Charity (practice), the practice of being benevolent, giving and sha ...
have been performed anonymously when benefactors do not wish to be acknowledged. A person who feels threatened might attempt to mitigate that threat through anonymity. A witness to a crime might seek to avoid retribution, for example, by anonymously calling a crime tipline. In many other situations (like conversation between strangers, or buying some product or service in a shop), anonymity is traditionally accepted as natural. Some writers have argued that the term "namelessness", though technically correct, does not capture what is more centrally at stake in contexts of anonymity. The important idea here is that a person be
non-identifiable In statistics, identifiability is a property which a statistical model, model must satisfy for precise statistical inference, inference to be possible. A model is identifiable if it is theoretically possible to learn the true values of this model ...
, unreachable, or untrackable. Anonymity is also seen as a way to realize certain other values, such as
privacy Privacy (, ) is the ability of an individual or group to seclude themselves or information about themselves, and thereby express themselves selectively. The domain of privacy partially overlaps with security, which can include the concepts of a ...
or liberty. An important example of anonymity being not only protected, but enforced, by law is in voting in
free election An election is a formal group decision-making process whereby a population chooses an individual or multiple individuals to hold public office. Elections have been the usual mechanism by which modern representative democracy has operated s ...
s. Criminals might proceed anonymously to conceal their participation in a crime. In certain situations, however, it may be illegal to remain anonymous. For example, 24 of the U.S. states have "stop and identify" statutes that require persons detained to self-identify when requested by a law enforcement officer, when the person is reasonably suspected of committing a crime. Over the past few years, anonymity tools used on the
dark web The dark web is the World Wide Web content that exists on darknets ( overlay networks) that use the Internet but require specific software, configurations, or authorization to access. Through the dark web, private computer networks can communica ...
by criminals and malicious users have drastically altered the ability of law enforcement to use conventional surveillance techniques. The term "anonymous message" typically refers to a message that does not reveal its sender. In many countries, anonymous letters are protected by law and must be delivered as regular letters. In
mathematics Mathematics is a field of study that discovers and organizes methods, Mathematical theory, theories and theorems that are developed and Mathematical proof, proved for the needs of empirical sciences and mathematics itself. There are many ar ...
, in reference to an arbitrary element (e.g., a human, an object, a
computer A computer is a machine that can be Computer programming, programmed to automatically Execution (computing), carry out sequences of arithmetic or logical operations (''computation''). Modern digital electronic computers can perform generic set ...
), within a well-defined
set Set, The Set, SET or SETS may refer to: Science, technology, and mathematics Mathematics *Set (mathematics), a collection of elements *Category of sets, the category whose objects and morphisms are sets and total functions, respectively Electro ...
(called the "anonymity set"), "anonymity" of that element refers to the property of that element of not being identifiable within this set. If it is not identifiable, then the element is said to be "anonymous".


Etymology

The word anonymous was borrowed into English around 1600 from the Late Latin word "anonymus", from Ancient Greek ᾰ̓νώνῠμος (anṓnumos, "without name"), from ᾰ̓ν- (an-, "un-") with ὄνῠμᾰ (ónuma), Aeolic and Doric dialectal form of ὄνομᾰ (ónoma, "name").


Pseudonymity

Sometimes a person may desire a long-term relationship (such as a reputation) with another party without necessarily disclosing
personally identifying information Personal data, also known as personal information or personally identifiable information (PII), is any information related to an identifiable person. The abbreviation PII is widely used in the United States, but the phrase it abbreviates has fou ...
to that party. In this case, it may be useful for the person to establish a unique identifier, called a
pseudonym A pseudonym (; ) or alias () is a fictitious name that a person assumes for a particular purpose, which differs from their original or true meaning ( orthonym). This also differs from a new name that entirely or legally replaces an individual's o ...
. Examples of pseudonyms are
pen name A pen name or nom-de-plume is a pseudonym (or, in some cases, a variant form of a real name) adopted by an author and printed on the title page or by-line of their works in place of their real name. A pen name may be used to make the author's na ...
s,
nickname A nickname, in some circumstances also known as a sobriquet, or informally a "moniker", is an informal substitute for the proper name of a person, place, or thing, used to express affection, playfulness, contempt, or a particular character trait ...
s,
credit card number A payment card number, primary account number (PAN), or simply a card number, is the card identifier found on payment cards, such as credit cards and debit cards, as well as stored-value cards, gift cards and other similar cards. In some situat ...
s, student numbers,
bank account A bank account is a financial account maintained by a bank or other financial institution in which the financial transaction A financial transaction is an Contract, agreement, or communication, between a buyer and seller to exchange goods, ...
numbers, etc. A pseudonym enables the other party to link different messages from the same person and, thereby, to establish a long-term relationship. Pseudonyms are widely used in
social network A social network is a social structure consisting of a set of social actors (such as individuals or organizations), networks of Dyad (sociology), dyadic ties, and other Social relation, social interactions between actors. The social network per ...
s and other virtual communication, although recently some important service providers like Google try to discourage pseudonymity. Someone using a pseudonym would be strictly considered to be using "pseudonymity" not "anonymity", but sometimes the latter is used to refer to both (in general, a situation where the legal identity of the person is disguised).


Psychological effects

Anonymity may reduce the accountability one perceives to have for their actions, and removes the impact these actions might otherwise have on their reputation. This can have dramatic effects, both useful and harmful to various parties involved. Thus, it may be used for psychological tactics involving any respective party to purport or support or discredit any sort of activity or belief. In conversational settings, anonymity may allow people to reveal personal history and feelings without fear of later embarrassment. Electronic conversational media can provide physical isolation, in addition to anonymity. This prevents physical retaliation for remarks, and prevents negative or
taboo A taboo is a social group's ban, prohibition or avoidance of something (usually an utterance or behavior) based on the group's sense that it is excessively repulsive, offensive, sacred or allowed only for certain people.''Encyclopædia Britannica ...
behavior or discussion from tarnishing the reputation of the speaker. This can be beneficial when discussing very private matters, or taboo subjects or expressing views or revealing facts that may put someone in physical, financial, or legal danger (such as illegal activity, or unpopular, or outlawed political views). In work settings, the three most common forms of anonymous communication are traditional suggestion boxes, written feedback, and
Caller ID Caller identification (Caller ID) is a telephone service, available in analog and digital telephone systems, including voice over IP (VoIP), that transmits a caller's telephone number to the called party's telephone equipment when the call is ...
blocking. Additionally, the appropriateness of anonymous organizational communication varies depending on the use, with organizational surveys or assessments typically perceived as highly appropriate and firing perceived as highly inappropriate. Anonymity use and appropriateness have also been found to be significantly related to the quality of relationships with key others at work. With few perceived negative consequences, anonymous or semi-anonymous forums often provide a soapbox for disruptive conversational behavior. The term "
troll A troll is a being in Nordic folklore, including Norse mythology. In Old Norse sources, beings described as trolls dwell in isolated areas of rocks, mountains, or caves, live together in small family units, and are rarely helpful to human bei ...
" is sometimes used to refer to those who engage in such disruptive behavior. Relative anonymity is often enjoyed in large crowds. Different people have different psychological and philosophical reactions to this development, especially as a modern phenomenon. This anonymity is an important factor in
crowd psychology Crowd psychology (or mob psychology) is a subfield of social psychology which examines how the psychology of a group of people differs from the psychology of any one person within the group. The study of crowd psychology looks into the actions ...
, and behavior in situations such as a
riot A riot or mob violence is a form of civil disorder commonly characterized by a group lashing out in a violent public disturbance against authority, property, or people. Riots typically involve destruction of property, public or private. The p ...
. This perceived anonymity can be compromised by technologies such as
photography Photography is the visual arts, art, application, and practice of creating images by recording light, either electronically by means of an image sensor, or chemically by means of a light-sensitive material such as photographic film. It is empl ...
.
Groupthink Groupthink is a psychological phenomenon that occurs within a group of people in which the desire for harmony or conformity in the group results in an irrational or dysfunctional decision-making outcome. Cohesiveness, or the desire for cohesivenes ...
behavior and
conformity Conformity or conformism is the act of matching attitudes, beliefs, and behaviors to social group, group norms, politics or being like-minded. Social norm, Norms are implicit, specific rules, guidance shared by a group of individuals, that guide t ...
are also considered to be an established effect of internet anonymity. Anonymity also permits highly trained professionals such as
judge A judge is a person who wiktionary:preside, presides over court proceedings, either alone or as a part of a judicial panel. In an adversarial system, the judge hears all the witnesses and any other Evidence (law), evidence presented by the barris ...
s to freely express themselves regarding the strategies they employ to perform their jobs objectively.


Anonymity, commerce, and crime

Anonymous commercial transactions can protect the privacy of consumers. Some consumers prefer to use cash when buying everyday goods (like groceries or tools), to prevent sellers from aggregating information or soliciting them in the future. Credit cards are linked to a person's name, and can be used to discover other information, such as postal address, phone number, etc. The ecash system was developed to allow secure anonymous transactions. Another example would be Enymity, which actually makes a purchase on a customer's behalf. When purchasing taboo goods and services, anonymity makes many potential consumers more comfortable with or more willing to engage in the transaction. Many
loyalty program A loyalty program or rewards program is a marketing strategy designed to encourage customers to continue to shop at or use the services of one or more businesses associated with the program. Single-company vs. coalition programs Loyalty progr ...
s use cards that personally identify the consumer engaging in each transaction (possibly for later solicitation, or for redemption or security purposes), or that act as a numerical
pseudonym A pseudonym (; ) or alias () is a fictitious name that a person assumes for a particular purpose, which differs from their original or true meaning ( orthonym). This also differs from a new name that entirely or legally replaces an individual's o ...
, for use in
data mining Data mining is the process of extracting and finding patterns in massive data sets involving methods at the intersection of machine learning, statistics, and database systems. Data mining is an interdisciplinary subfield of computer science and ...
. Anonymity can also be used as a protection against legal prosecution. For example, when committing unlawful actions, many criminals attempt to avoid identification by the means of obscuring/covering their faces with
scarves A scarf (: scarves or scarfs) is a long piece of fabric that is worn on or around the neck, shoulders, or head. A scarf is used for warmth, sun protection, cleanliness, fashion, religious reasons, or to show support for a sports club or team. ...
or
mask A mask is an object normally worn on the face, typically for protection, disguise, performance, or entertainment, and often employed for rituals and rites. Masks have been used since antiquity for both ceremonial and practical purposes, ...
s, and wear
gloves A glove is a garment covering the hand, with separate sheaths or openings for each finger including the thumb. Gloves protect and comfort hands against cold or heat, damage by friction, abrasion or chemicals, and disease; or in turn to provide a ...
or other hand coverings in order to not leave any
fingerprint A fingerprint is an impression left by the friction ridges of a human finger. The recovery of partial fingerprints from a crime scene is an important method of forensic science. Moisture and grease on a finger result in fingerprints on surfa ...
s. In
organized crime Organized crime is a category of transnational organized crime, transnational, national, or local group of centralized enterprises run to engage in illegal activity, most commonly for profit. While organized crime is generally thought of as a f ...
, groups of criminals may collaborate on a certain project without revealing to each other their names or other personally identifiable information. The movie '' The Thomas Crown Affair'' depicted a fictional collaboration by people who had never previously met and did not know who had recruited them. The anonymous purchase of a gun or knife to be used in a crime helps prevent linking an abandoned weapon to the identity of the perpetrator.


Anonymity in charity

There are two aspects, one, giving to a large charitable organization obscures the beneficiary of a donation from the benefactor, the other is giving anonymously to obscure the benefactor both from the beneficiary and from everyone else. Anonymous charity has long been a widespread and durable moral precept of many ethical and religious systems, as well as being in practice a widespread human activity. A benefactor may not wish to establish any relationship with the beneficiary, particularly if the beneficiary is perceived as being unsavory. Benefactors may not wish to identify themselves as capable of giving. A benefactor may wish to improve the world, as long as no one knows who did it, out of modesty, wishing to avoid publicity. Another reason for anonymous charity is a benefactor who does not want a charitable organization to pursue them for more donations, sometimes aggressively.


Issues facing the anonymous

Attempts at anonymity are not always met with support from society. Anonymity sometimes clashes with the policies and procedures of governments or private organizations. In the United States, disclosure of identity is required to be able to
vote Voting is the process of choosing officials or policies by casting a ballot, a document used by people to formally express their preferences. Republics and representative democracies are governments where the population chooses representative ...
, though the
secret ballot The secret ballot, also known as the Australian ballot, is a voting method in which a voter's identity in an election or a referendum is anonymous. This forestalls attempts to influence the voter by intimidation, blackmailing, and potential vote ...
prevents disclosure of individual voting patterns. In
airport An airport is an aerodrome with extended facilities, mostly for commercial Aviation, air transport. They usually consist of a landing area, which comprises an aerially accessible open space including at least one operationally active surf ...
s in most countries, passengers are not allowed to board flights unless they have identified themselves to airline or transportation security personnel, typically in the form of the presentation of an
identification card An identity document (abbreviated as ID) is a document proving a person's identity. If the identity document is a plastic card it is called an ''identity card'' (abbreviated as ''IC'' or ''ID card''). When the identity document incorporates a ...
. On the other hand, some policies and procedures require anonymity. Stylometric identification of anonymous authors by writing style is a potential risk, which is expected to grow as analytic techniques improve and computing power and
text corpora In linguistics and natural language processing, a corpus (: corpora) or text corpus is a dataset, consisting of natively digital and older, digitalized, language resources, either annotated or unannotated. Annotated, they have been used in cor ...
grow. Authors may resist such identification by practicing adversarial stylometry.


Referring to the anonymous

When it is necessary to refer to someone who is anonymous, it is typically necessary to create a type of pseudo-identification for that person. In literature, the most common way to state that the identity of an author is unknown is to refer to them as simply "Anonymous". This is usually the case with older texts in which the author is long dead and unable to claim authorship of a work. When the work claims to be that of some famous author the
pseudonym A pseudonym (; ) or alias () is a fictitious name that a person assumes for a particular purpose, which differs from their original or true meaning ( orthonym). This also differs from a new name that entirely or legally replaces an individual's o ...
ous author is identified as "Pseudo-", as in
Pseudo-Dionysius the Areopagite Pseudo-Dionysius the Areopagite (or Dionysius the Pseudo-Areopagite) was a Greek author, Christian theologian and Neoplatonic philosopher of the late 5th to early 6th century, who wrote a set of works known as the ''Corpus Areopagiticum'' ...
, an author claiming—and long believed—to be
Dionysius the Areopagite Dionysius the Areopagite (; ''Dionysios ho Areopagitēs'') was an Athenian judge at the Areopagus Court in Athens, who lived in the first century. A convert to Christianity, he is venerated as a saint by multiple denominations. Life As rel ...
, an early Christian convert. ''Anonymus'', in its
Latin Latin ( or ) is a classical language belonging to the Italic languages, Italic branch of the Indo-European languages. Latin was originally spoken by the Latins (Italic tribe), Latins in Latium (now known as Lazio), the lower Tiber area aroun ...
spelling, generally with a specific city designation, is traditionally used by scholars in the humanities to refer to an ancient writer whose name is not known, or to a manuscript of their work. Many such writers have left valuable historical or literary records: an incomplete list of such ''Anonymi'' is at Anonymus. In the
history of art The history of art focuses on objects made by humans for any number of spiritual, narrative, philosophical, symbolic, conceptual, documentary, decorative, and even functional and other purposes, but with a primary emphasis on its aesthetics ...
, many painting workshops can be identified by their characteristic style and discussed and the workshop's output set in chronological order. Sometimes archival research later identifies the name, as when the "Master of Flémalle"—defined by three paintings in the Städelsches Kunstinstitut in
Frankfurt Frankfurt am Main () is the most populous city in the States of Germany, German state of Hesse. Its 773,068 inhabitants as of 2022 make it the List of cities in Germany by population, fifth-most populous city in Germany. Located in the forela ...
— was identified as
Robert Campin Robert Campin (Valenciennes (France) c. 1375 - Tournai (Belgium) 26 April 1444) now usually identified with the Master of Flémalle (earlier the Master of the Merode Triptych, before the discovery of three other similar panels), was a master pai ...
. The 20th-century art historian Bernard Berenson methodically identified numerous early Renaissance Florentine and Sienese workshops under such
sobriquet A sobriquet ( ) is a descriptive nickname, sometimes assumed, but often given by another. A sobriquet is distinct from a pseudonym in that it is typically a familiar name used in place of a real name without the need for explanation; it may beco ...
s as "Amico di Sandro" for an anonymous painter in the immediate circle of
Sandro Botticelli Alessandro di Mariano di Vanni Filipepi ( – May 17, 1510), better known as Sandro Botticelli ( ; ) or simply known as Botticelli, was an Italian painter of the Early Renaissance. Botticelli's posthumous reputation suffered until the late 1 ...
. In legal cases, a popularly accepted name to use when it is determined that an individual needs to maintain anonymity is "
John Doe John Doe (male) and Jane Doe (female) are multiple-use placeholder names that are used in the British, Canadian, and American legal systems, when the true name of a person is unknown or is being intentionally concealed. In the context of law ...
". This name is often modified to "Jane Doe" when the anonymity-seeker is female. The same names are also commonly used when the identification of a dead person is not known. The semi-acronym Unsub is used as law enforcement slang for "Unknown Subject of an Investigation". The
military A military, also known collectively as armed forces, is a heavily armed, highly organized force primarily intended for warfare. Militaries are typically authorized and maintained by a sovereign state, with their members identifiable by a d ...
often feels a need to honor the remains of soldiers for whom identification is impossible. In many countries, such a memorial is named the Tomb of the Unknown Soldier.


Anonymity and the press

Most modern newspapers and magazines attribute their articles to individual editors, or to
news agencies A news agency is an organization that gathers news reports and sells them to subscribing news organizations, such as newspapers, magazines and radio and television broadcasters. A news agency may also be referred to as a wire service, newswir ...
. An exception is the Markker weekly ''
The Economist ''The Economist'' is a British newspaper published weekly in printed magazine format and daily on Electronic publishing, digital platforms. It publishes stories on topics that include economics, business, geopolitics, technology and culture. M ...
.'' All British newspapers run their leaders, or
editorials An editorial, or leading article (UK) or leader (UK), is an article or any other written document, often unsigned, written by the senior editorial people or publisher of a newspaper or magazine, that expresses the publication's opinion about ...
, anonymously. ''The Economist'' fully adopts this policy, saying "Many hands write ''The Economist'', but it speaks with a collective voice". Guardian considers that ''"people will often speak more honestly if they are allowed to speak anonymously"''. According to Ross Eaman, in his book ''The A to Z of Journalism'', until the mid-19th century, most writers in Great Britain, especially the less well known, did not sign their names to their work in newspapers, magazines and reviews.


Anonymity on the Internet

Most commentary on the Internet is essentially done anonymously, using unidentifiable pseudonyms. However, this has been widely discredited in a study by the University of Birmingham, which found that the number of people who use the internet anonymously is statistically the same as the number of people who use the internet to interact with friends or known contacts. While these usernames can take on an identity of their own, they are sometimes separated and anonymous from the actual author. According to the University of Stockholm this is creating more freedom of expression, and less accountability.
Wikipedia Wikipedia is a free content, free Online content, online encyclopedia that is written and maintained by a community of volunteers, known as Wikipedians, through open collaboration and the wiki software MediaWiki. Founded by Jimmy Wales and La ...
is collaboratively written mostly by authors using either unidentifiable pseudonyms or
IP address An Internet Protocol address (IP address) is a numerical label such as that is assigned to a device connected to a computer network that uses the Internet Protocol for communication. IP addresses serve two main functions: network interface i ...
identifiers, although many Wikipedia editors use their real names instead of pseudonyms. However, the Internet was not designed for anonymity:
IP addresses An Internet Protocol address (IP address) is a numerical label such as that is assigned to a device connected to a computer network that uses the Internet Protocol for communication. IP addresses serve two main functions: network interface id ...
serve as virtual mailing addresses, which means that any time any resource on the Internet is accessed, it is accessed from a particular IP address, and the data traffic patterns to and from IP addresses can be intercepted, monitored, and analysed, even if the content of that traffic is encrypted. This address can be mapped to a particular
Internet Service Provider An Internet service provider (ISP) is an organization that provides a myriad of services related to accessing, using, managing, or participating in the Internet. ISPs can be organized in various forms, such as commercial, community-owned, no ...
(ISP), and this ISP can then provide information about what customer that IP address was leased to. This does not necessarily implicate a specific individual (because other people could be using that customer's connection, especially if the customer is a public resource, such as a library), but it provides regional information and serves as powerful
circumstantial evidence Circumstantial evidence is evidence that relies on an inference to connect it to a conclusion of fact, such as a fingerprint at the scene of a crime. By contrast, direct evidence supports the truth of an assertion directly, i.e., without need ...
. Anonymizing services such as I2P and
Tor Tor, TOR or ToR may refer to: Places * Toronto, Canada ** Toronto Raptors * Tor, Pallars, a village in Spain * Tor, former name of Sloviansk, Ukraine, a city * Mount Tor, Tasmania, Australia, an extinct volcano * Tor Bay, Devon, England * Tor ...
address the issue of IP tracking. In short, they work by encrypting packets within multiple layers of encryption. The packet follows a predetermined route through the anonymizing network. Each router sees the immediate previous router as the origin and the immediate next router as the destination. Thus, no router ever knows both the true origin and destination of the packet. This makes these services more secure than centralized anonymizing services (where a central point of knowledge exists). Sites such as Chatroulette, Omegle, and
Tinder Tinder is easily Combustibility and flammability, combustible material used to Firemaking, start a fire. Tinder is a finely divided, open material which will begin to glow under a shower of sparks. Air is gently wafted over the glowing tinder unt ...
(which pair up random users for a conversation) capitalized on a fascination with anonymity. Apps like Yik Yak,
Secret Secrecy is the practice of hiding information from certain individuals or groups who do not have the "need to know", perhaps while sharing it with other individuals. That which is kept hidden is known as the secret. Secrecy is often controver ...
and Whisper let people share things anonymously or quasi-anonymously whereas
Random In common usage, randomness is the apparent or actual lack of definite pattern or predictability in information. A random sequence of events, symbols or steps often has no order and does not follow an intelligible pattern or combination. ...
let the user to explore the web anonymously. Some email providers, like Tuta also offer the ability to create anonymous email accounts which do not require any personal information from the account holder. Other sites, however, including
Facebook Facebook is a social media and social networking service owned by the American technology conglomerate Meta Platforms, Meta. Created in 2004 by Mark Zuckerberg with four other Harvard College students and roommates, Eduardo Saverin, Andre ...
and
Google+ Google+ (sometimes written as Google Plus, stylized as G+ or g+) was a Social networking service, social network owned and operated by Google until it ceased operations in 2019. The network was launched on June 28, 2011, in an attempt to challe ...
, ask users to sign in with their legal names. In the case of Google+, this requirement led to a controversy known as the
nymwars Nymwars is a series of conflicts over policies that mandate that all users of certain internet communications platforms identify themselves using their legal names. The term is mostly associated with Google's name policies on Google+ and YouTube. ...
. The prevalence of
cyberbullying Cyberbullying (cyberharassment or online bullying) is a form of bullying or harassment using electronic means. Since the 2000s, it has become increasingly common, especially among teenagers and adolescents, due to young people's increased u ...
is often attributed to relative Internet anonymity, due to the fact that potential offenders are able to mask their identities and prevent themselves from being caught. A principal in a high school stated that comments made on these anonymous sites are "especially vicious and hurtful since there is no way to trace their source and it can be disseminated widely. "Cyberbullying, as opposed to general bullying, is still a widely-debated area of
Internet freedom Internet censorship is the legal censorship, control or suppression of what can be accessed, published, or viewed on the Internet. Censorship is most often applied to specific Network domain, internet domains (such as ''Wikipedia.org'', for exam ...
in several states. Though Internet anonymity can provide a harmful environment through which people can hurt others, anonymity can allow for a much safer and relaxed internet experience. In a study conducted at Carnegie Mellon University, 15 out of 44 participants stated that they choose to be anonymous online because of a prior negative experience during which they did not maintain an anonymous presence.Kang et al. (2013). Why Do People Seek Anonymity on the Internet? Informing Policy and Design. CHI 2013. Such experiences include stalking, releasing private information by an opposing school political group, or tricking an individual into traveling to another country for a job that did not exist. Participants in this study stated that they were able to avoid their previous problems by using false identification online.
David Chaum David Lee Chaum (born 1955) is an American computer scientist, List of cryptographers, cryptographer, and inventor. He is known as a pioneer in cryptography and privacy-preserving technologies, and widely recognized as the inventor of Digital cur ...
is called the Godfathers of anonymity and he has a claim to be one of the great visionaries of contemporary science. In the early 1980s, while a computer scientist at Berkeley, Chaum predicted the world in which computer networks would make mass surveillance a possibility. As Dr. Joss Wright explains: "David Chaum was very ahead of his time. He predicted in the early 1980s concerns that would arise on the internet 15 or 20 years later." There are some people though that consider anonymity in the Internet as a danger for our society as a whole. David Davenport, an assistant professor in the Computer Engineering Department of Bilkent University in Ankara, Turkey, considers that by allowing anonymous Net communication, the fabric of our society is at risk. "Accountability requires those responsible for any misconduct be identified and brought to justice. However, if people remain anonymous, by definition, they cannot be identified, making it impossible to hold them accountable." he says.


Arguments for and against anonymity

As A. Michael Froomkin says: "The regulation of anonymous and pseudonymous communications promises to be one of the most important and contentious Internet-related issues of the next decade". Anonymity and pseudonymity can be used for good and bad purposes. And anonymity can in many cases be desirable for one person and not desirable for another person. A company may, for example, not like an employee to divulge information about improper practices within the company, but society as a whole may find it important that such improper practices are publicly exposed. Good purposes of anonymity and pseudonymity: * People dependent on an organization, or afraid of revenge, may divulge serious misuse, which should be revealed. Anonymous tips can be used as an information source by newspapers, as well as by police departments, soliciting tips aimed at catching criminals. Not everyone will regard such anonymous communication as good. For example, message boards established outside companies, but for employees of such companies to vent their opinions on their employer, have sometimes been used in ways that at least the companies themselves were not happy about
belson 2001 The surname Belson may refer to: * Charles Belson (1773–1830), British Army officer of the Napoleonic Era * Flavien Belson (born 1987), footballer * Frederick Belson (1874–1952), English rugby union player * Jerry Belson (1938–2006), director ...
Police use of anonymity is a complex issue, since the police often will want to know the identity of the tipper in order to get more information, evaluate the reliability or get the tipper as a witness. Is it ethical for police to identify the tipper if it has opened up an anonymous tipping hotline? * People in a country with a repressive political regime may use anonymity (for example Internet-based anonymity servers in other countries) to avoid persecution for their political opinions. Note that even in democratic countries, some people claim, rightly or wrongly, that certain political opinions are persecuted. allace 1999gives an overview of uses of anonymity to protect political speech. Every country has a limit on which political opinions are allowed, and there are always people who want to express forbidden opinions, like racial agitation in most democratic countries. * People may openly discuss personal stuff which would be embarrassing to tell many people about, such as sexual problems. Research shows that anonymous participants disclose significantly more information about themselves oinson 2001 People might also feel more open to sharing their personal work anonymously if they feel that their friends and family would harass them or disapprove of their work. Examples of such work could include
fan fiction Fan fiction or fanfiction, also known as fan fic, fanfic, fic or FF, is fiction typically written in an amateur capacity by fans as a form of fan labor, unauthorized by, but based on, an existing work of fiction. The author uses copyrighted ...
or vocal performances. * People may get more objective evaluation of their messages, by not showing their real name. * People are more equal in anonymous discussions, factors like status, gender, etc., will not influence the evaluation of what they say. * Pseudonymity can be used to experiment with role playing, for example a man posing as a woman in order to understand the feelings of people of different gender. * Pseudonymity can be a tool for timid people to dare establish contacts which can be of value for them and others, e.g. through contact advertisements. * People can contribute to online social discussion with reduced risk of harm by online predators. Online predators include "criminals, hackers, scammers, stalkers, and malicious online vendors". * People can avoid becoming famous by publishing their work anonymously. There has always, however, also been a negative side of anonymity: * Anonymity can be used to protect a criminal performing many different crimes, for example slander, distribution of child pornography, illegal threats, racial agitation, fraud, intentional damage such as distribution of computer viruses, etc. The exact set of illegal acts varies from country to country, but most countries have many laws forbidding certain "informational" acts, everything from high treason to instigation of rebellion, etc., to swindling. * Anonymity can be used for online payments for criminals paying others to perform illegal acts or purchases. * Anonymity can be used to seek contacts for performing illegal acts, like a Child grooming searching for children to abuse or a swindler searching for people to rip off. * Even when the act is not illegal, anonymity can be used for offensive or disruptive communication. For example, some people use anonymity in order to say harmful things about other people, known as
cyberbullying Cyberbullying (cyberharassment or online bullying) is a form of bullying or harassment using electronic means. Since the 2000s, it has become increasingly common, especially among teenagers and adolescents, due to young people's increased u ...
. *
Internet troll In slang, a troll is a person who posts deliberately offensive or provocative messages online (such as in social media, a newsgroup, a forum, a chat room, an online video game) or who performs similar behaviors in real life. The methods and ...
s use anonymity to harm discussions in online social platforms. The border between illegal and legal but offensive use is not very sharp, and varies depending on the law in each country.


Anonymous (group)

Anonymous Anonymous may refer to: * Anonymity, the state of an individual's identity, or personally identifiable information, being publicly unknown ** Anonymous work, a work of art or literature that has an unnamed or unknown creator or author * Anonym ...
(used as a mass noun) is a loosely associated international network of activist and
hacktivist Hacktivism (or hactivism; a portmanteau of '' hack'' and ''activism''), is the use of computer-based techniques such as hacking as a form of civil disobedience to promote a political agenda or social change. A form of Internet activism with roo ...
entities. A website nominally associated with the group describes it as "an internet gathering" with "a very loose and decentralized command structure that operates on ideas rather than directives". The group became known for a series of well-publicized publicity stunts and distributed denial-of-service (DDoS) attacks on government, religious, and corporate websites. An image commonly associated with Anonymous is the "man without a head" represents leaderless organization and anonymity.


Legal protection of anonymity

Anonymity is perceived as a right by many, especially the anonymity in the internet communications. The partial right for anonymity is legally protected to various degrees in different jurisdictions.


United States

The tradition of anonymous speech is older than the United States. Founders
Alexander Hamilton Alexander Hamilton (January 11, 1755 or 1757July 12, 1804) was an American military officer, statesman, and Founding Fathers of the United States, Founding Father who served as the first U.S. secretary of the treasury from 1789 to 1795 dur ...
,
James Madison James Madison (June 28, 1836) was an American statesman, diplomat, and Founding Fathers of the United States, Founding Father who served as the fourth president of the United States from 1809 to 1817. Madison was popularly acclaimed as the ...
, and
John Jay John Jay (, 1745 – May 17, 1829) was an American statesman, diplomat, signatory of the Treaty of Paris (1783), Treaty of Paris, and a Founding Father of the United States. He served from 1789 to 1795 as the first chief justice of the United ...
wrote ''
The Federalist Papers ''The Federalist Papers'' is a collection of 85 articles and essays written by Alexander Hamilton, James Madison, and John Jay under the collective pseudonym "Publius" to promote the ratification of the Constitution of the United States. The ...
'' under the pseudonym "Publius" and "the Federal Farmer" spoke up in rebuttal. The
US Supreme Court The Supreme Court of the United States (SCOTUS) is the highest court in the federal judiciary of the United States. It has ultimate appellate jurisdiction over all Federal tribunals in the United States, U.S. federal court cases, and over Stat ...
has repeatedly recognized rights to speak anonymously derived from the First Amendment. * The right to ''anonymous political campaigning'' was established in the
U.S. Supreme Court The Supreme Court of the United States (SCOTUS) is the highest court in the federal judiciary of the United States. It has ultimate appellate jurisdiction over all U.S. federal court cases, and over state court cases that turn on question ...
decision in '' McIntyre v. Ohio Elections Commission'' (1995) case: "Anonymity is a shield from the tyranny of the majority...It thus exemplifies the purpose behind the
Bill of Rights A bill of rights, sometimes called a declaration of rights or a charter of rights, is a list of the most important rights to the citizens of a country. The purpose is to protect those rights against infringement from public officials and pri ...
, and of the First Amendment in particular: to protect unpopular individuals from retaliation—and their ideas from suppression—at the hand of an intolerant society". The Supreme court explained that protecting anonymous political speech receives the highest protection however, this priority takes on new dimensions in the digital age. * The right of individuals for "anonymous communication" was established by the decision in case ''Columbia Insurance Company v. Seescandy.com, et al.'' (1999) of the
United States District Court for the Northern District of California The United States District Court for the Northern District of California (in case citations, N.D. Cal.) is the federal United States district court whose jurisdiction comprises the following counties of California: Alameda, Contra Costa, De ...
: "People are permitted to interact pseudonymously and anonymously with each other so long as those acts are not in violation of the law". * The right of individuals for "anonymous reading" was established in the U.S. Supreme Court decision in ''United States v. Rumely'' (1953): "Once the government can demand of a publisher the names of the purchasers of his publications, the free press as we know it disappears. Then the spectre of a government agent will look over the shoulder of everyone who reads". The pressure on anonymous communication has grown substantially after the 2001 terrorist attack on the World Trade Center and the subsequent new political climate. Although it is still difficult to oversee their exact implications, measures such as the US Patriot Act, the European Cybercrime Convention and the
European Union The European Union (EU) is a supranational union, supranational political union, political and economic union of Member state of the European Union, member states that are Geography of the European Union, located primarily in Europe. The u ...
rules on
data retention Data retention defines the policies of persistent data and records management for meeting legal and business data archival requirements. Although sometimes interchangeable, it is not to be confused with the Data Protection Act 1998. The differe ...
are only few of the signs that the exercise of the right to the anonymous exchange of information is under substantial pressure. An above-mentioned 1995 Supreme Court ruling in ''McIntyre v. Ohio Elections Commission'' reads: ''"(...) protections for anonymous speech are vital to democratic discourse. Allowing dissenters to shield their identities frees them to express critical minority views . . . Anonymity is a shield from the tyranny of the majority. . . . It thus exemplifies the purpose behind the Bill of Rights and of the First Amendment in particular: to protect unpopular individuals from retaliation . . . at the hand of an intolerant society."'' However, anonymous online speech is not without limits. It is clearly demonstrated in a case from 2008, one in which the defendant stated on a law-school discussion board that two women should be raped, an anonymous poster's comments may extend beyond free speech protections. In the case, a Connecticut federal court must apply a standard to decide whether the poster's identity should be revealed. There are several tests, however, that the court could apply when considering this issue.


European Union

The right to internet anonymity is also covered by European legislation that recognizes the fundamental right to
data protection Data protection may refer to: * Information privacy, also known as data privacy * Data security {{Authority control ...
,
freedom of expression Freedom of speech is a principle that supports the freedom of an individual or a community to articulate their opinions and ideas without fear of retaliation, censorship, or legal sanction. The rights, right to freedom of expression has been r ...
, freedom of impression. The
European Union Charter of Fundamental Rights The Charter of Fundamental Rights of the European Union (CFR) enshrines certain political, social, and economic rights for European Union (EU) citizens and residents into EU law. It was drafted by the European Convention and solemnly proclai ...
recognizes in Article. 8 (Title II: "Freedoms") the right of everyone to protection of personal data concerning him. The right to privacy is now essentially the individual's right to have and to maintain control over information about him.


International legislation

One of the most controversial international legal acts, regarding this subject is Anti-Counterfeiting Trade Agreement (ACTA). As of February 2015, the treaty was signed -but not all ratified- by 31 states as well as the European Union. Japan was on 4 October 2012 the first to ratify the treaty. It creates an international regime for imposing civil and criminal penalties on Internet counterfeiting and copyright infringement. Although ACTA is intentionally vague, leaving signatories to draw precise rules themselves, critics say it could mean innocent travellers having their laptops searched for unlicensed music, or being jailed for carrying a
generic drug A generic drug is a pharmaceutical drug that contains the same chemical substance as a drug that was originally protected by chemical patents. Generic drugs are allowed for sale after the patents on the original drugs expire. Because the active ch ...
. Infringers could be liable for the total loss of potential sales (implying that everyone who buys a counterfeit product would have bought the real thing). It applies to unintentional use of copyright material. It puts the onus on website owners to ensure they comply with laws across several territories. It has been negotiated secretively and outside established international trade bodies, despite EU criticisms.


Anonymity and politics

The history of anonymous expression in political dissent is both long and with important effect, as in the
Letters of Junius ''Letters of Junius'' (or Junius: ''Stat nominis umbra'') is a collection of private and open letters critical of the government of King George III from an anonymous polemicist ( Junius) claimed by some to be Philip Francis (although Junius' real ...
or
Voltaire François-Marie Arouet (; 21 November 169430 May 1778), known by his ''Pen name, nom de plume'' Voltaire (, ; ), was a French Age of Enlightenment, Enlightenment writer, philosopher (''philosophe''), satirist, and historian. Famous for his wit ...
's ''
Candide ( , ) is a French satire written by Voltaire, a philosopher of the Age of Enlightenment, first published in 1759. The novella has been widely translated, with English versions titled ''Candide: or, All for the Best'' (1759); ''Candide: or, The ...
'', or scurrilous as in
pasquinade A pasquinade or pasquil is a form of satire, usually an anonymous brief lampoon in verse or prose, and can also be seen as a form of literary caricature. The genre became popular in early modern Europe, in the 16th century, though the term had b ...
s. In the tradition of anonymous British political criticism, ''
The Federalist Papers ''The Federalist Papers'' is a collection of 85 articles and essays written by Alexander Hamilton, James Madison, and John Jay under the collective pseudonym "Publius" to promote the ratification of the Constitution of the United States. The ...
'' were anonymously authored by three of America's
Founding Fathers The Founding Fathers of the United States, often simply referred to as the Founding Fathers or the Founders, were a group of late-18th-century American revolutionary leaders who united the Thirteen Colonies, oversaw the War of Independence ...
. Without the public discourse on the controversial contents of the U.S. Constitution, ratification would likely have taken much longer as individuals worked through the issues. The
United States Declaration of Independence The Declaration of Independence, formally The unanimous Declaration of the thirteen States of America in the original printing, is the founding document of the United States. On July 4, 1776, it was adopted unanimously by the Second Continen ...
, however, was not anonymous. If it had been unsigned, it might well have been less effective.
John Perry Barlow John Perry Barlow (October 3, 1947February 7, 2018) was an American poet, essayist, cattle rancher, and cyberlibertarian political activist who had been associated with both the Democratic and Republican parties. He was also a lyricist for th ...
, Joichi Ito, and other U.S.
blog A blog (a Clipping (morphology), truncation of "weblog") is an informational website consisting of discrete, often informal diary-style text entries also known as posts. Posts are typically displayed in Reverse chronology, reverse chronologic ...
gers express a very strong support for anonymous editing as one of the basic requirements of open politics as conducted on the Internet.


Anonymity and pseudonymity in art

Anonymity is directly related to the concept of
obscurantism In philosophy, obscurantism or obscurationism is the Anti-intellectualism, anti-intellectual practice of deliberately presenting information in an wikt:abstruse, abstruse and imprecise manner that limits further inquiry and understanding of a subj ...
or
pseudonymity A pseudonym (; ) or alias () is a fictitious name that a person assumes for a particular purpose, which differs from their original or true meaning (orthonym). This also differs from a new name that entirely or legally replaces an individual's ow ...
, where an artist or a group attempts to remain anonymous, for various reasons such as adding an element of mystique to themselves or their work, attempting to avoid what is known as the "
cult of personality A cult of personality, or a cult of the leader,Cas Mudde, Mudde, Cas and Kaltwasser, Cristóbal Rovira (2017) ''Populism: A Very Short Introduction''. New York: Oxford University Press. p. 63. is the result of an effort which is made to create ...
" or hero worship (in which the
charisma () is a personal quality of magnetic charm, persuasion, or appeal. In the fields of sociology and political science, psychology, and management, the term ''charismatic'' describes a type of leadership. In Christian theology, the term ''chari ...
, good looks, wealth or other unrelated or mildly related aspects of the people is the main reason for interest in their work, rather than the work itself) or to break into a field or area of interest normally dominated by males (as by the famous
science fiction Science fiction (often shortened to sci-fi or abbreviated SF) is a genre of speculative fiction that deals with imaginative and futuristic concepts. These concepts may include information technology and robotics, biological manipulations, space ...
author
James Tiptree, Jr Alice Bradley Sheldon, better known as James Tiptree Jr. (born Alice Hastings Bradley; August 24, 1915 – May 19, 1987), was an American people, American science fiction and fantasy author. It was not publicly known until 1977 that James Tiptre ...
who was actually a woman named Alice Bradley Sheldon, and likely JT LeRoy). Some seem to want to avoid the "limelight" of popularity and to live private lives, such as
Thomas Pynchon Thomas Ruggles Pynchon Jr. ( , ; born May 8, 1937) is an American novelist noted for his dense and complex novels. His fiction and non-fiction writings encompass a vast array of subject matter, Literary genre, genres and Theme (narrative), th ...
, J. D. Salinger, De Onbekende Beeldhouwer (an anonymous sculptor whose exhibited work in
Amsterdam Amsterdam ( , ; ; ) is the capital of the Netherlands, capital and Municipalities of the Netherlands, largest city of the Kingdom of the Netherlands. It has a population of 933,680 in June 2024 within the city proper, 1,457,018 in the City Re ...
attracted strong attention in the 1980s and 1990sDepictions, text in Dutc
Retrieved 23 June 2017.
), and by DJ duo
Daft Punk Daft Punk were a French electronic music duo formed in 1993 in Paris by Thomas Bangalter and Guy-Manuel de Homem-Christo. They achieved popularity in the late 1990s as part of the French house movement, combining house music, funk, disco, tech ...
(1993-2021). For street artist
Banksy Banksy is a pseudonymous England-based street artist, political activist, and film director whose real name and identity remain unconfirmed and the subject of speculation. Active since the 1990s, his satirical street art and subversive ep ...
, "anonymity is vital to him because graffiti is illegal". Anonymity has been used in music by avant-garde ensemble
The Residents The Residents are an American art collective and art rock band best known for their avant-garde music and multimedia works. Since their first official release, ''Meet the Residents'' (1974), they have released over 60 albums, numerous music vid ...
,
Jandek Jandek is the musical project of Sterling Smith (born October 26, 1945), a Houston, Texas-based American Lo-fi music, lo-fi Folk music, folk singer. Since 1978, Jandek has independently released over 120 albums while granting an interview extreme ...
(until 2004), costumed comedy rock band The Radioactive Chicken Heads, and DJs
Deadmau5 Joel Thomas Zimmerman (born January 5, 1981), known professionally as deadmau5 (pronounced "dead-mouse"), is a Canadian electronic music producer and disc jockey, DJ. His musical style mostly includes progressive house and electro house music, ...
(1998–present) and
Marshmello Christopher Comstock (born May 19, 1992), known professionally as Marshmello, is an American DJ and record producer. His songs "Silence (Marshmello song), Silence" (featuring Khalid (American singer), Khalid), "Wolves (Selena Gomez and Mar ...
(2015–present). This is frequently applied in fiction, from
The Lone Ranger The Lone Ranger is a fictional masked former Texas Ranger who fought outlaws in the American Old West with his Native American friend Tonto. The character has been called an enduring icon of American culture. He first appeared in 1933 in a ...
,
Superman Superman is a superhero created by writer Jerry Siegel and artist Joe Shuster, which first appeared in the comic book ''Action Comics'' Action Comics 1, #1, published in the United States on April 18, 1938.The copyright date of ''Action Comics ...
, and
Batman Batman is a superhero who appears in American comic books published by DC Comics. Batman was created by the artist Bob Kane and writer Bill Finger, and debuted in Detective Comics 27, the 27th issue of the comic book ''Detective Comics'' on M ...
, where a hidden identity is assumed.


Mathematics of anonymity

Suppose that only Alice, Bob, and Carol have keys to a bank safe and that, one day, contents of the safe go missing (lock not violated). Without additional information, we cannot know for sure whether it was Alice, Bob or Carol who emptied the safe. Notably, each element in could be the perpetrator with a probability of 1. However, as long as none of them was convicted with 100% certainty, we must hold that the perpetrator remains anonymous and that the attribution of the probability of 1 to one of the players has to remain undecided. If Carol has a definite alibi at the time of perpetration, then we may deduce that it must have been either Alice or Bob who emptied the safe. In this particular case, the perpetrator is not completely anonymous anymore, as both Alice and Bob now know "who did it" with a probability of 1.


See also

* List of anonymously published works * List of anonymous masters *
Notname In art history, a (, "name of necessity" or "contingency name") is an invented name given to an artist whose identity has been lost. The practice arose from the need to give such artists and their typically untitled or generically titled works a ...
*
Data anonymization Data anonymization is a type of Sanitization (classified information), information sanitization whose intent is privacy protection. It is the process of removing personally identifiable information from data sets, so that the people whom the dat ...
*
Friend-to-friend A friend-to-friend (or F2F) computer network is a type of peer-to-peer network in which users only make direct connections with people they know. Passwords or digital signatures can be used for authentication. Unlike other kinds of private P2 ...
*
Internet privacy Internet privacy involves the right or mandate of personal privacy concerning the storage, re-purposing, provision to third parties, and display of information pertaining to oneself via the Internet. Internet privacy is a subset of data privacy. P ...
* Online disinhibition effect *
On the Internet, nobody knows you're a dog "On the Internet, nobody knows you're a dog" is an adage and Internet meme about Internet anonymity which began as a caption to a cartoon drawn by Peter Steiner, published in the July 5, 1993 issue of the American magazine ''The New Yorker'' ...
*
Personally identifiable information Personal data, also known as personal information or personally identifiable information (PII), is any information related to an identifiable person. The abbreviation PII is widely used in the United States, but the phrase it abbreviates has fou ...
* Anonymity (social choice)


Notes


References


Bibliography

* {{Authority control