Crowds (anonymity Network)

	Crowds (anonymity Network) Crowds is a proposed anonymity network for anonymous web browsing. The main idea behind Crowds anonymity protocol is to hide each user's communications by routing them randomly within a group of similar users. Neither the collaborating group members nor the end receiver can therefore be sure where in the group the packet originated. Crowds was designed by Michael K. Reiter and Aviel D. Rubin. It defends against internal attackers and a corrupt receiver, but provides no anonymity against a global attacker or a local eavesdropper (see "Crowds: Anonymity For Web Transactions"). Crowds is vulnerable to the predecessor attack; this was discussed in Reiter and Rubin's paper and further expanded in "The Predecessor Attack: An Analysis of a Threat to Anonymous Communications Systems" by Matthew K. Wright, Micah Adler, And Brian Neil Levine. Crowds introduced the concept of users blending into a crowd of computers.Fischer-Hubner, Simone (2001) IT-Security and Privacy: Design and use of priv ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
picture info	Anonymous Web Browsing Private browsing is a privacy feature in some web browsers. When operating in such a mode, the browser creates a temporary session that is isolated from the browser's main session and user data. Browsing history is not saved, and local data associated with the session, such as Cookies, Web cache, are cleared when the session is closed. These modes are designed primarily to prevent data and history associated with a particular browsing session from persisting on the device, or being discovered by another user of the same device. In web development, it can be used to quickly test displaying pages as they appear to first-time visitors. Private browsing modes do not necessarily protect users from being tracked by other websites or their Internet service provider (ISP). Furthermore, there is a possibility that identifiable traces of activity could be leaked from private browsing sessions by means of the operating system, security flaws in the browser, or via malicious browser exte ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Michael K ''Life & Times of Michael K'' is a 1983 novel by South African-born writer J. M. Coetzee. The novel won the Booker Prize for 1983. The novel is a story of a man named Michael K, who makes an arduous journey from Cape Town to his mother's rural birthplace, amid a fictitious civil war during the apartheid era, in the 1970-80s. Plot summary The novel is split into three parts. The novel begins with Michael K, a poor man with a cleft lip who has spent his childhood in institutions and works as a gardener in Cape Town. Michael tends to his mother who works as a domestic servant to a wealthy family. The country descends into civil war and martial law is imposed, and Michael's mother becomes very sick. Michael decides to quit his job and escape the city to return his mother to her birthplace, which she says was Prince Albert. Michael finds himself unable to obtain the proper permits for travel out of the city so he builds a shoddy rickshaw to carry his mother, and they go on their ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Avi Rubin Aviel David "Avi" Rubin (born November 8, 1967) is an expert in systems and networking security. He is a graduate of the University of Michigan and Professor of Computer Science at Johns Hopkins University, Technical Director of the Information Security Institute at Johns Hopkins, Director of ACCURATE, and President and co-founder of Independent Security Evaluators. In 2002, he was elected to the Board of Directors of the USENIX Association for a two-year term. Rubin is credited with bringing to light vulnerabilities in Premier Election Solutions' (formerly Diebold Election Systems) AccuVote electronic voting machines. In 2006, he published a book on his experiences since this event. In 2012, drawing on his experience as an expert witness in high-tech litigation, Rubin founded the consultancy Harbor Labs "to provide expertise in legal cases, including testimony, reports, source code review and analysis." As of 2015, Rubin is Director of the Health and Medical Security Lab at J ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Predecessor Attack Predecessor may refer to: * A holy person announcing the approaching appearance of a prophet, see precursor * Predecessor (graph theory), a term in graph theory * The predecessor problem, a problem in theoretical computer science Theoretical computer science (TCS) is a subset of general computer science and mathematics that focuses on mathematical aspects of computer science such as the theory of computation, lambda calculus, and type theory. It is difficult to circumsc ... {{disambiguation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Degree Of Anonymity In anonymity networks (e.g., Tor, Crowds, Mixmaster, I2P, etc.), it is important to be able to measure quantitatively the guarantee that is given to the system. The degree of anonymity d is a device that was proposed at the 2002 Privacy Enhancing Technology (PET) conference. Two papers put forth the idea of using entropy as the basis for formally measuring anonymity: "Towards an Information Theoretic Metric for Anonymity", and "Towards Measuring Anonymity". The ideas presented are very similar with minor differences in the final definition of d. __TOC__ Background Anonymity networks have been developed and many have introduced methods of proving the anonymity guarantees that are possible, originally with simple Chaum Mixes and Pool Mixes the size of the set of users was seen as the security that the system could provide to a user. This had a number of problems; intuitively if the network is international then it is unlikely that a message that contains only Urdu came from the Uni ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
picture info	Onion Routing Onion routing is a technique for anonymous communication over a computer network. In an onion network, messages are encapsulated in layers of encryption, analogous to layers of an onion. The encrypted data is transmitted through a series of network nodes called onion routers, each of which "peels" away a single layer, uncovering the data's next destination. When the final layer is decrypted, the message arrives at its destination. The sender remains anonymous because each intermediary knows only the location of the immediately preceding and following nodes. While onion routing provides a high level of security and anonymity, there are methods to break the anonymity of this technique, such as timing analysis. History Onion routing was developed in the mid-1990s at the U.S. Naval Research Laboratory by employees Paul Syverson, Michael G. Reed, and David Goldschlag to protect U.S. intelligence communications online. It was then refined by the Defense Advanced Research Projects A ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
picture info	Tor (anonymity Network) Tor, short for The Onion Router, is free and open-source software for enabling anonymous communication. It directs Internet traffic through a free, worldwide, volunteer overlay network, consisting of more than seven thousand relays, to conceal a user's location and usage from anyone performing network surveillance or traffic analysis. Using Tor makes it more difficult to trace a user's Internet activity. Tor's intended use is to protect the personal privacy of its users, as well as their freedom and ability to communicate confidentially through IP address anonymity using Tor exit nodes. History The core principle of Tor, onion routing, was developed in the mid-1990s by United States Naval Research Laboratory employees, mathematician Paul Syverson, and computer scientists Michael G. Reed and David Goldschlag, to protect American intelligence communications online. Onion routing is implemented by means of encryption in the application layer of the communication pro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
picture info	Mix Network Mix networks are routing protocols that create hard-to-trace communications by using a chain of proxy servers known as ''mixes'' which take in messages from multiple senders, shuffle them, and send them back out in random order to the next destination (possibly another mix node). This breaks the link between the source of the request and the destination, making it harder for eavesdroppers to trace end-to-end communications. Furthermore, mixes only know the node that it immediately received the message from, and the immediate destination to send the shuffled messages to, making the network resistant to malicious mix nodes. Each message is encrypted to each proxy using public key cryptography; the resulting encryption is layered like a Russian doll (except that each "doll" is of the same size) with the message as the innermost layer. Each proxy server strips off its own layer of encryption to reveal where to send the message next. If all but one of the proxy servers are compromis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Routing Software Routing is the process of selecting a path for traffic in a network or between or across multiple networks. Broadly, routing is performed in many types of networks, including circuit-switched networks, such as the public switched telephone network (PSTN), and computer networks, such as the Internet. In packet switching networks, routing is the higher-level decision making that directs network packets from their source toward their destination through intermediate network nodes by specific packet forwarding mechanisms. Packet forwarding is the transit of network packets from one network interface to another. Intermediate nodes are typically network hardware devices such as routers, gateways, firewalls, or switches. General-purpose computers also forward packets and perform routing, although they have no specially optimized hardware for the task. The routing process usually directs forwarding on the basis of routing tables. Routing tables maintain a record of the routes to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]