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Yahoo! Messenger (sometimes abbreviated Y!M) was an advertisement-supported instant messaging
client Client(s) or The Client may refer to: * Client (business) * Client (computing), hardware or software that accesses a remote service on another computer * Customer or client, a recipient of goods or services in return for monetary or other valuabl ...
and associated protocol provided by
Yahoo! Yahoo! (, styled yahoo''!'' in its logo) is an American web services provider. It is headquartered in Sunnyvale, California and operated by the namesake company Yahoo Inc., which is 90% owned by investment funds managed by Apollo Global Manage ...
. Yahoo! Messenger was provided free of charge and could be downloaded and used with a generic "Yahoo ID" which also allowed access to other Yahoo! services, such as Yahoo! Mail. The service also offered
VoIP Voice over Internet Protocol (VoIP), also called IP telephony, is a method and group of technologies for the delivery of voice communications and multimedia sessions over Internet Protocol (IP) networks, such as the Internet. The terms Internet t ...
, file transfers, webcam hosting, a text messaging service, and chat rooms in various categories. Yahoo! Messenger dates back to Yahoo! Chat, which was a public
chat room The term chat room, or chatroom (and sometimes group chat; abbreviated as GC), is primarily used to describe any form of synchronous conferencing, occasionally even asynchronous conferencing. The term can thus mean any technology, ranging from ...
service. The actual client, originally called Yahoo! Pager, launched on March 9, 1998 and renamed to Yahoo! Messenger in 1999. The chat room service shut down in 2012. In addition to instant messaging features similar to those offered by ICQ, it also offered (on Microsoft Windows) features such as: IMVironments (customizing the look of Instant Message windows, some of which include authorized themes of various cartoons such as ''
Garfield ''Garfield'' is an American comic strip created by Jim Davis. Originally published locally as ''Jon'' in 1976, then in nationwide syndication from 1978 as ''Garfield'', it chronicles the life of the title character Garfield the cat, his hum ...
'' or ''
Dilbert ''Dilbert'' is an American comic strip written and illustrated by Scott Adams, first published on April 16, 1989. It is known for its satirical office humor about a white-collar, micromanaged office with engineer Dilbert as the title charact ...
''), address-book integration and Custom Status Messages. It was also the first major IM client to feature BUZZing and music-status. A new Yahoo! Messenger was released in 2015, replacing the older one. Yahoo! Messenger was shut down entirely on July 17, 2018, replaced by a new service titled
Yahoo! Together Yahoo! Messenger (sometimes abbreviated Y!M) was an advertisement-supported instant messaging client (computing), client and associated protocol provided by Yahoo!. Yahoo! Messenger was provided free of charge and could be downloaded and used wit ...
, only to be shut down as well in 2019.


Features


File sharing

Yahoo! Messenger offered file sending capabilities to its users. Files could be up to 2 GB each. After the software's relaunch, only certain media files could be shared: photos, animated GIFs and videos. It also allowed album sharing, with multiple media files in one IM. The animated GIF feature integrated with Tumblr, also owned by Yahoo! at that time.


Likes

The new Yahoo! Messenger added a like button to messages and media. It was basic in functionality, adding a heart when clicked and listing contacts who added a like.


Unsend

The new Yahoo! Messenger allowed messages to be unsent, deleting them from both the sender and the receiver's messaging page.


Group conversations (formerly Yahoo! Chat)

The new Yahoo! Messenger allowed private group conversations. Yahoo! Chat was a free online chat room service provided exclusively for Yahoo! users. Yahoo! Chat was first launched on January 7, 1997. Yahoo! Chat was a separate vertical on Yahoo! In its original form, Yahoo! Chat was a user-to-user text chat service used by millions worldwide. Soon after launch, Yahoo! Chat partnered with NBC and NewsCorp to produce moderated Chat Events. Yahoo! Chat events eventually developed broadcast partnerships with 100+ entities and hosted 350+ events-a-month. Yahoo's Live Chat with the music group Hanson on July 21, 1998, was the Internet's largest live event to date. The blockbusters kept on with events including 3 Beatles (Paul, George, Ringo), a live event from Columbine during the tragedy (in partnership with Time Online), live chats from outer space with John Glenn and many others. Sadly, in one of Yahoo's poorer decisions, Yahoo! Chat Events were discontinued in 2001, right at the start of the social media era. On March 9, 1998, the first public version of Yahoo! Pager was released, with Yahoo! Chat among its features. It allowed users to create public chat rooms, send private messages, and use emoticons. In June 2005, with no advance warning, Yahoo disabled users' ability to create their own chat rooms. The move came after KPRC-TV in Houston, Texas reported that many of the user-created rooms were geared toward
pedophilia Pedophilia ( alternatively spelt paedophilia) is a psychiatric disorder in which an adult or older adolescent experiences a primary or exclusive sexual attraction to prepubescent children. Although girls typically begin the process of puberty ...
. The story prompted several advertisers, including Pepsi and Georgia-Pacific, to pull their ads from Yahoo. On November 30, 2012, Yahoo announced that among other changes that the public chat rooms would be discontinued as of December 14, 2012. quoting "This will enable us to refocus our efforts on modernizing our core Yahoo products experiences and of course, create new ones." Until the chat rooms became unavailable on December 14, 2012, all versions of Yahoo! Messenger could access Yahoo chat rooms. Yahoo has since closed down the chat.yahoo.com site (first having it redirect visitors to a section of the Yahoo! Messenger page, but as of June 2019 not even resolving that host name anymore) because the great majority of chat users accessed it through Messenger. The company worked for a while on a way to allow users to create their own rooms while providing safeguards against abuse. A greyed-out option to "create a room" was available until the release of version 11.


Voice and video

As of January 2014, the
iOS iOS (formerly iPhone OS) is a mobile operating system created and developed by Apple Inc. exclusively for its hardware. It is the operating system that powers many of the company's mobile devices, including the iPhone; the term also include ...
version supported voice calls, with video calling on some devices. The Android version supported "voice & video calls ( beta)". From September 2016, Yahoo! Messenger no longer offered webcam service on their computer application. Yahoo's software previously allowed users with newer versions (8 through 10) to use webcams. This option enabled users from distances all over the world to view others who had installed a webcam on their end. The service was free with provided speeds averaging from a range in between 1 and 2 frames per second. The resolution of the images could be seen starting at 320×240 pixels or 160×120.


Protocol

The Yahoo! Messenger Protocol (YMSG) was the client's underlying
network protocol A communication protocol is a system of rules that allows two or more entities of a communications system to transmit information via any kind of variation of a physical quantity. The protocol defines the rules, syntax, semantics and synchroniza ...
. It provided a language and series of conventions for software communicating with Yahoo!'s Instant Messaging service. In essence, YMSG performed the same role for Yahoo!'s IM as HTTP does for the
World Wide Web The World Wide Web (WWW), commonly known as the Web, is an information system enabling documents and other web resources to be accessed over the Internet. Documents and downloadable media are made available to the network through web ...
. Unlike HTTP, however, YMSG was a proprietary protocol, a closed standard aligned only with the Yahoo! messaging service. Rival messaging services have their own protocols, some based on open standards, others proprietary, each effectively fulfilling the same role with different mechanics. One of the fundamental tenets of instant messaging is the notion that users can see when someone is connected to the network—known in the industry as 'presence'. The YMSG protocol used the mechanics of a standard internet connection to achieve presence—the same connection it used to send and receive data. In order for each user to remain 'visible' to other users on the service, and thereby signaling their availability, their Yahoo! IM client software maintained a functional, open, network connection linking the client to Yahoo!'s IM servers.


URI scheme

Yahoo! Messenger's installation process automatically installed an extra uniform resource identifier (URI) scheme handler for the Yahoo! Messenger Protocol into some web browsers, so that URIs beginning ymsgr could open a new Yahoo! Messenger window with specified parameters. This is similar in function to the
mailto mailto is a Uniform Resource Identifier (URI) scheme for email addresses. It is used to produce hyperlinks on websites that allow users to send an email to a specific address directly from an HTML document, without having to copy it and entering i ...
URI scheme, which creates a new e-mail message using the system's default mail program. For instance, a web page might include a link like the following in its HTML source to open a window for sending a message to the YIM user ''exampleuser'': <a href="ymsgr:sendim?exampleuser">Send Message</a> To specify a message body, the m parameter was used, so that the link location might look like this: ymsgr:sendim?exampleuser&m=This+is+my+message Other commands were: * ymsgr:sendim?''yahooid'' * ymsgr:addfriend?''yahooid'' * ymsgr:sendfile?''yahooid'' * ymsgr:call?''yahooid'' * ymsgr:callPhone?''phonenumber'' * ymsgr:im – opened the "Send an IM" window * ymsgr:customstatus?''A+custom+status'' – changed the status message * ymsgr:getimv?''imvname'' – loaded an IMVironment (example: ymsgr:getimv?doodle, ymsgr:getimv?yfighter)


Interoperability

On October 13, 2005, Yahoo and Microsoft announced plans to introduce interoperability between their two messengers, creating the second-largest real-time communications service userbase worldwide: 40 percent of all users. The announcement came after years of third-party interoperability success (most notably, Trillian and Pidgin) and criticisms that the major real-time communications services were locking their networks. Microsoft has also had talks with AOL in an attempt to introduce further interoperability, but AOL was unwilling to participate. Interoperability between Yahoo and Windows Live Messenger was launched July 12, 2006. This allowed Yahoo and Windows Live Messenger users to chat to each other without the need to create an account on the other service, provided both contacts used the latest versions of the clients. It was not possible to talk using the voice service between the two different messengers. As of December 14, 2012, the interoperability between Yahoo! Messenger and Windows Live Messenger ceased to exist. The Live Messenger contacts appeared as greyed out and it was not possible to send instant messages to them.


Games

There were various games and applications available that can be accessed via the conversation window by clicking the games icon and challenging your current contact. It requires Java to function. As of April 18, 2014, games were removed from Yahoo! Messenger.


Plug-ins

In version 8.0, Yahoo! Messenger featured the ability for users to create plug-ins, which are then hosted and showcased on the Yahoo chat room. Yahoo now no longer provides plugin development SDK. Yahoo! Messenger users could listen to free and paid
Internet radio Online radio (also web radio, net radio, streaming radio, e-radio, IP radio, Internet radio) is a digital audio service transmitted via the Internet. Broadcasting on the Internet is usually referred to as webcasting since it is not transmitted ...
services, using the defunct Yahoo! Music Radio plug-in from within the messenger window. The plug-in also player functionality, such as play, pause, skip and rate this song.


Adoption

As of August 2000, according to
Media Metrix Media may refer to: Communication * Media (communication), tools used to deliver information or data ** Advertising media, various media, content, buying and placement for advertising ** Broadcast media, communications delivered over mass el ...
, Yahoo! Messenger had about 10.6 million users in the U.S., about the same as
MSN Messenger MSN Messenger (also known colloquially simply as "Messenger"), later rebranded as Windows Live Messenger, was a cross-platform instant-messaging client developed by Microsoft. It connected to the Microsoft Messenger service and, in later versio ...
but trailing
AOL Instant Messenger AIM (AOL Instant Messenger) was an instant messaging and presence computer program created by AOL, which used the proprietary OSCAR instant messaging protocol and the TOC protocol to allow registered users to communicate in real time. AIM w ...
. However another analyst doubted the figures for Yahoo! and MSN. As of the month of September 2001, over five billion instant messages were sent on the network, up 115% from the year before, according to Media Metrix. Another study in August 2002 showed that it had a 16.7 percent share of IM work and home subscribers in the U.S., compared to 24.1 percent for MSN and 28.3 percent for AIM. In April 2002, 19.1 million people in the U.S. used Yahoo! Messenger, according to Media Metrix. Another study from Nielsen Net Ratings showed that as of 2002, Yahoo! Messenger had some 12 million users worldwide. This increased to 22 million by March 2006. Yahoo! Messenger was the dominant instant messaging platform among commodity traders until the platform was discontinued in August 2016. At the time of Yahoo! Messenger's closure in 2018, it remained popular in
Vietnam Vietnam or Viet Nam ( vi, Việt Nam, ), officially the Socialist Republic of Vietnam,., group="n" is a country in Southeast Asia, at the eastern edge of mainland Southeast Asia, with an area of and population of 96 million, making i ...
.


Software

As of March 27, 2016, the only supported clients were the Android, iOS and web browser clients. The previous Windows, Mac, Unix and Solaris clients were not supported anymore, and their servers began shutting down on August 5, 2016, with the clients no longer working by August 31, 2016. It turned out that the servers for the legacy clients were finally shut down sometime between the mid-morning and early afternoon hours Eastern Standard Time on September 1, 2016, resulting in the legacy desktop clients no longer being able to access their buddy/contact lists. As of 2018 (with the last version), Yahoo! Messenger was available for computers as a web service, including both a messenger-only site and Yahoo! Mail integration. Apps were also available on Android and
iOS iOS (formerly iPhone OS) is a mobile operating system created and developed by Apple Inc. exclusively for its hardware. It is the operating system that powers many of the company's mobile devices, including the iPhone; the term also include ...
. Pidgin could connect to Yahoo! Messenger by using th
FunYahoo++
plugin. Mobile versions of Yahoo! Messenger were launched originally for
Palm OS Palm OS (also known as Garnet OS) was a mobile operating system initially developed by Palm, Inc., for personal digital assistants (PDAs) in 1996. Palm OS was designed for ease of use with a touchscreen-based graphical user interface. It is pro ...
and
Windows CE Windows Embedded Compact, formerly Windows Embedded CE, Windows Powered and Windows CE, is an operating system subfamily developed by Microsoft as part of its Windows Embedded family of products. Unlike Windows Embedded Standard, which is base ...
devices. In a deal signed March 2000, Yahoo! Messenger would come bundled on
Palm Palm most commonly refers to: * Palm of the hand, the central region of the front of the hand * Palm plants, of family Arecaceae **List of Arecaceae genera * Several other plants known as "palm" Palm or Palms may also refer to: Music * Palm (ba ...
handheld computers. It was also available for
Verizon Wireless Verizon is an American wireless network operator that previously operated as a separate division of Verizon Communications under the name Verizon Wireless. In a 2019 reorganization, Verizon moved the wireless products and services into the div ...
customers, through a deal with Yahoo! announced in March 2001, and through Sprint's MiniBrowser. A version for the T-Mobile Sidekick II was released in 2004. This was to be followed by versions for Symbian (via Yahoo! Go), BlackBerry, and then for iPhone in April 2009. A version called Yahoo! Messenger for SMS also existed, which allowed IM via SMS.


History

Yahoo! Pager launched on March 9, 1998, an instant messaging (IM) client integrated with Yahoo! services including Yahoo! Chat. It included basic messaging support, a buddy list with status message support, the ability to block other users, alerts when a buddies came online, and notifications when a new Yahoo! Mail message arrived. In 2000, the name changed to Yahoo! Messenger. Version 5.0, released November 2001, introduced IMVironments, an initiative that allowed users to play music and Flash Video clips inside the IM window. Yahoo! partnered with rock band Garbage that provided their single "
Androgyny Androgyny is the possession of both masculine and feminine characteristics. Androgyny may be expressed with regard to biological sex, gender identity, or gender expression. When ''androgyny'' refers to mixed biological sex characteristics in ...
" available to share by users. Other partnerships also made IMVironments for the '' Monsters, Inc.'' movie, the '' Super Smash Bros. Melee'' video game, and the Hello Kitty character, among others. In August 2002 with the release of version 5.5, the resolution for video calling was increased to a possible 320x240 and 20 frames per second (up from 160x120 and 1 frame per second). From October 2002, Yahoo! offered for corporate subscribers a more secure and better ( SSL) encrypted IM client, called Yahoo! Messenger Enterprise Edition. It was released with a $30 yearly subscription package in 2003. Yahoo! Messenger version 6.0 was released in May 2004. It added games, music, photos, and Yahoo! Search, alongside a "stealth" mode. It also debuted Yahoo! Avatars. With the release of version 7.0 in August 2005, the client was now renamed to Yahoo! Messenger with Voice. It had several new features such as
VoIP Voice over Internet Protocol (VoIP), also called IP telephony, is a method and group of technologies for the delivery of voice communications and multimedia sessions over Internet Protocol (IP) networks, such as the Internet. The terms Internet t ...
,
voicemail A voicemail system (also known as voice message or voice bank) is a computer-based system that allows users and subscribers to exchange personal voice messages; to select and deliver voice information; and to process transactions relating to ind ...
, drag-and-drop file and photo sharing,
Yahoo! 360° Yahoo! 360° was a social networking and personal communication portal operated by Yahoo! made available in 2005. It enabled users to create personal web sites, share photos from Yahoo! Photos, maintain blogs and lists, create and share a public ...
and
LAUNCHcast Yahoo! Music Radio (formerly known as LAUNCHcast) was an Internet radio service offered by Clear Channel Communications' iHeartRadio through Yahoo! Music. The service, formerly offered by LAUNCH Media, and originally developed by Todd Beaupré, ...
integration, and others. It was seen as a challenger against Skype. On October 12, 2005, Yahoo! and Microsoft formed an alliance in which Yahoo! Messenger and
MSN Messenger MSN Messenger (also known colloquially simply as "Messenger"), later rebranded as Windows Live Messenger, was a cross-platform instant-messaging client developed by Microsoft. It connected to the Microsoft Messenger service and, in later versio ...
(later known as Windows Live Messenger) will be interconnected, allowing users of both communities to communicate and share emoticons and buddy lists with each other. The service was enabled on Yahoo! Messenger with Voice 8.0 in July 2006. As of version 8.1, the name switched back to just Yahoo! Messenger. Beginning in 2006, Yahoo made known its intention to provide a web interface for Yahoo! Messenger, culminating in the
Gmail Gmail is a free email service provided by Google. As of 2019, it had 1.5 billion active users worldwide. A user typically accesses Gmail in a web browser or the official mobile app. Google also supports the use of email clients via the POP and ...
-like web archival and indexing of chat conversations through Yahoo! Mail. However, while Yahoo! Mail integrated much of the rudimentary features of Messenger beginning in 2007, Yahoo did not succeed initially in integrating archival of chat conversations into Mail. Instead, a separate Adobe Flex-based web messenger was released in 2007 with archival of conversations which take place inside the web messenger itself. At the Consumer Electronics Show in January 2007, Yahoo! Messenger for Vista was introduced, which is a version designed and optimized for Windows Vista. It exploited the new design elements of Vista's
Windows Presentation Foundation Windows Presentation Foundation (WPF) is a free and open-source graphical subsystem (similar to WinForms) originally developed by Microsoft for rendering user interfaces in Windows-based applications. WPF, previously known as "Avalon", was initia ...
(WPF) and introduced a new user interface and features. The application was in a preview beta until finally released for download on December 6, 2007. As of October 24, 2008, Yahoo! Messenger for Vista is no longer available. In May 2007, Yahoo! Messenger for the Web was launched, a browser-based client of the IM service. Yahoo! Messenger version 9 was released in September 2008. It allows the viewing of
YouTube YouTube is a global online video sharing and social media platform headquartered in San Bruno, California. It was launched on February 14, 2005, by Steve Chen, Chad Hurley, and Jawed Karim. It is owned by Google, and is the second mo ...
videos within the chat window, and integrates with other Yahoo! services such as
Flickr Flickr ( ; ) is an American image hosting and video hosting service, as well as an online community, founded in Canada and headquartered in the United States. It was created by Ludicorp in 2004 and was a popular way for amateur and profession ...
. This version also saw the release of Pingbox, which embeds on a blog or website and allows visitors to send IM texts anonymously without needing Yahoo! Messenger software or to sign in. Version 10, released November 2009, incorporates many bug fixes and features high-quality video calling. The last major Windows client release, version 11 in 2011, featured integration with
Facebook Facebook is an online social media and social networking service owned by American company Meta Platforms. Founded in 2004 by Mark Zuckerberg with fellow Harvard College students and roommates Eduardo Saverin, Andrew McCollum, Dustin Mosk ...
,
Twitter Twitter is an online social media and social networking service owned and operated by American company Twitter, Inc., on which users post and interact with 280-character-long messages known as "tweets". Registered users can post, like, and ...
and
Zynga Zynga Inc. () is an American developer running social video game services. It was founded in April 2007, with headquarters in San Mateo, California. The company primarily focuses on mobile and social networking platforms. Zynga states its missio ...
, allowing chat with Facebook friends and playing Zynga games within. It also archives past messages on an online server which is accessible through the client. Version 11.5 (released November 2011) added tabbed IMs. In December 2015, an all-new, rewritten Yahoo! Messenger was launched, only on mobile and through a browser. A desktop version of the "new" Messenger was later released, shortly before the "legacy" Messenger shut down on August 5, 2016.


Yahoo! Together

Yahoo! Together was a freeware and cross-platform
messaging A message is a discrete unit of communication intended by the source for consumption by some recipient or group of recipients. A message may be delivered by various means, including courier, telegraphy, carrier pigeon and electronic bus. ...
service, developed by
Yahoo! Yahoo! (, styled yahoo''!'' in its logo) is an American web services provider. It is headquartered in Sunnyvale, California and operated by the namesake company Yahoo Inc., which is 90% owned by investment funds managed by Apollo Global Manage ...
for the Android and
iOS iOS (formerly iPhone OS) is a mobile operating system created and developed by Apple Inc. exclusively for its hardware. It is the operating system that powers many of the company's mobile devices, including the iPhone; the term also include ...
mobile platforms. The software was introduced in beta on May 8, 2018, as Yahoo! Squirrel to replace Yahoo! Messenger and Verizon Media's
AOL Instant Messenger AIM (AOL Instant Messenger) was an instant messaging and presence computer program created by AOL, which used the proprietary OSCAR instant messaging protocol and the TOC protocol to allow registered users to communicate in real time. AIM w ...
. In October 2018, it was renamed to its present name. Yahoo! Together was targeted to families and the consumer market rather than enterprise. The app was compared to Slack. Less than a year after its public beta release, Yahoo! Together went offline on April 4, 2019.


Third-party clients

Third-party clients could also be used to access the original service. These included: *
Adium Adium is a free and open source instant messaging client for macOS that supports multiple IM networks, including Google Talk and XMPP. In the past, it has also supported AIM, ICQ, Windows Live Messenger and Yahoo! Messenger. Adium is written usi ...
*
BitlBee BitlBee is a cross-platform IRC instant messaging gateway, licensed under the terms of the GNU General Public License. BitlBee communicates with the user via the IRC protocol, providing a gateway to popular chat networks such as AIM and ICQ ...
*
Centericq __NOTOC__ Centericq is a text mode menu- and window-driven instant messaging interface that supports the ICQ, Yahoo!, AIM, MSN, IRC, XMPP, LiveJournal, and Gadu-Gadu protocols. Overview Centericq allows you to send, receive, and forward messa ...
*
Empathy Empathy is the capacity to understand or feel what another person is experiencing from within their frame of reference, that is, the capacity to place oneself in another's position. Definitions of empathy encompass a broad range of social, co ...
*
Fire Fire is the rapid oxidation of a material (the fuel) in the exothermic chemical process of combustion, releasing heat, light, and various reaction products. At a certain point in the combustion reaction, called the ignition point, flames a ...
* imeem *
IMVU IMVU (, stylized as imvu) is an online virtual world and social networking site. IMVU was founded in 2004 and was originally backed by venture investors Menlo Ventures, AllegisCyber Capital, Bridgescale Partners, and Best Buy Capital.
*
Kopete Kopete is a multi-protocol, free software instant messaging client released as part of the KDE Software Compilation. Although it can run in numerous environments, it was designed for and integrates with the KDE Plasma Workspaces. Kopete was star ...
* meebo * Meetro * Miranda NG * Paltalk * Pidgin * Trillian * Trillian Astra * Trillian Pro * Windows Live Messenger


SPIM

Yahoo! Messenger users were subjected to unsolicited messages ( SPIM). Yahoo's primary solution to the issue involved deleting such messages and placing the senders on an Ignore List. , it was estimated that at least 75% of all users who used Yahoo chat rooms were bots. Yahoo introduced a
CAPTCHA A CAPTCHA ( , a contrived acronym for "Completely Automated Public Turing test to tell Computers and Humans Apart") is a type of challenge–response test used in computing to determine whether the user is human. The term was coined in 2003 b ...
system to help filter out bots from joining chat rooms, but such systems generally do little to prevent abuse by spammers.


Security

On November 4, 2014, the Electronic Frontier Foundation listed Yahoo! Messenger on its "Secure Messaging Scorecard". Yahoo! Messenger received 1 out of 7 points on the scorecard. It received a point for encryption during transit, but missed points because communications were not encrypted with a key the provider didn't have access to (i.e. the communications were not end-to-end encrypted), users couldn't verify contacts' identities, past messages were not secure if the encryption keys were stolen (i.e. the service did not provide
forward secrecy In cryptography, forward secrecy (FS), also known as perfect forward secrecy (PFS), is a feature of specific key agreement protocols that gives assurances that session keys will not be compromised even if long-term secrets used in the session key ...
), the code was not open to independent review (i.e. the source code was not open-source), the security design was not properly documented, and there had not been a recent independent
security audit An information security audit is an audit on the level of information security in an organization. It is an independent review and examination of system records, activities and related documents. These audits are intended to improve the level of in ...
. The British intelligence agency
Government Communications Headquarters Government Communications Headquarters, commonly known as GCHQ, is an intelligence and security organisation responsible for providing signals intelligence (SIGINT) and information assurance (IA) to the government and armed forces of the Uni ...
(GCHQ)'s secret mass surveillance program Optic Nerve and National Security Agency (NSA) were reported to be indiscriminately collecting still images from Yahoo webcam streams from millions of mostly innocent Yahoo webcam users from 2008 to 2010, among other things creating a database for facial recognition for future use. Optic Nerve took a still image from the webcam stream every 5 minutes. In September 2016, ''The New York Times'' reported that Yahoo's security team, led by
Alex Stamos Alex Stamos is a Greek American computer scientist and adjunct professor at Stanford University's Center for International Security and Cooperation. He is the former chief security officer (CSO) at Facebook. His planned departure from the compan ...
, had pressed for Yahoo to adopt end-to-end encryption sometime between 2014 and 2015, but this had been resisted by Jeff Bonforte, Yahoo's senior vice president, "because it would have hurt Yahoo's ability to index and search message data".


See also

*
Comparison of instant messaging clients The landscape for instant messaging involves cross-platform instant messaging clients that can handle one or multiple protocols. Clients that use the same protocol can typically federate and talk to one another. The following table compares gener ...
* Comparison of instant messaging protocols *
Comparison of IRC clients The following tables compare general and technical information between a number of notable IRC client programs which have been discussed in independent, reliable prior published sources. General Basic general information about the notablecl ...
* Instant messaging *
Yahoo Together Yahoo! Messenger (sometimes abbreviated Y!M) was an advertisement-supported instant messaging client (computing), client and associated protocol provided by Yahoo!. Yahoo! Messenger was provided free of charge and could be downloaded and used wit ...


References


External links

* {{URI scheme Discontinued software BlackBerry software IOS software Classic Mac OS instant messaging clients MacOS instant messaging clients Symbian instant messaging clients Windows instant messaging clients Freeware Messenger Yahoo! instant messaging clients VoIP software Videotelephony 1998 software Android (operating system) software Yahoo! community websites Internet properties established in 1998 Internet properties disestablished in 2018 Messenger Defunct instant messaging clients