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Anonymity Can Be Had with Different Protective MeasuresAnonymity typically refers to a person and means that the personal identity or personally identifiable information of that person is not known. It derives from the Greek word that means without a name or name-less. An anonymity set refers to the property of an arbitrary element, which is a human, object, etc, and refers to the property of that element of being identifiable within this set. If it cant be identified, it is said to be anonymous.
Anonymity is not a sure thing and the degree of anonymity one has may vary. The term "anonymous message" usually refers to message, usually transmitted over some form of a network, that does not carry any information about its sender and its intended recipient. It is unclear if several of these messages have been sent by the same sender or if they
have the same intended recipient.
Sometimes a person may want to establish a reputation with some other entity, without their identity being disclosed to that entity. In this is the case, it may be useful for the person to establish pseudonym, which is a unique identifier, with the other entity. Examples of pseudonyms are things such as nicknames, credit card numbers, student numbers, bank account numbers or IP addresses. Doing this allows the other entity to link different messages from the same person, which helps maintain the long-term relationship. Typically pseudonyms do not contain personally identifying information. Communication where pseudonyms are used are not called "anonymous", but instead are called "pseudonymous.
However, in other contexts what matters is that these concepts hide a person's legal identity. In these contexts people may not distinguish between anonymity and pseudonymity.
Anonymity occurs when there are no identifying characteristics, such as a name or description of physical appearance that are disclosed. This can occur when there is a lack of interest in learning this information, or through intentional efforts to hide these characteristics. Anonymity can occur unintentionally, as is often the case with victims, or when a body is discovered in such a state that the physical features used to identify someone no longer exist. A winner of a lottery jackpot is anonymous until that person turns in the winning lottery ticket, and many acts of charity are performed anonymously because some benefactors do not wish to be acknowledged for their actions.
There are many reasons why someone may want to obscure their identity and become anonymous. Several of these reasons are legal and legitimate. For example a person who feels threatened by someone else might try to hide from the threat using different methods of anonymity. There are also many illegal reasons to want to be anonymous. Criminals typically try to keep themselves anonymous to either conceal the fact that a crime has been committed, or to avoid being apprehended.
When sending messages over the Internet, many people are worried about being annonymous. There are many different systems, such as Usenet, e-mail, instant messaging, web forums, and P2P systems allow this anonymity because there is no obvious way for a casual user to connect other users with a "real world" identity.
If you want strong anonymity, intermediate services may be used to stop attempts at identification, even by the government. Many people use cryptography, passage through multiple legal jurisdictions, and various methods to thwart traffic analysis to get that anonymity. Examples of the people who use these methods include anonymous remailers, Anonymous P2P systems, and services of the Anonymizer company.
Opponents of this online anonymity suggest that anonymity enables or encourages illegal or dangerous activity. These people believe that without anonymity, these things would would be less likely, or not occur.
There are many different ways to achieve anonymity on the Internet, and it is an important feature if you are looking for some privacy and security
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