`
`https://www.techopedia.com/definition/342/Authentication
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`Definition - What does Authentication mean?
`In the context of computer systems, authentication is a process that ensures and confirms
`a user’s identity. Authentication is one of the five pillars of information assurance (IA). The
`other four are integrity, availability, confidentiality and nonrepudiation.
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`Techopedia explains Authentication
`Authentication begins when a user tries to access information. First, the user must prove
`his access rights and identity. When logging into a computer, users commonly enter
`usernames and passwords for authentication purposes. This login combination, which must
`be assigned to each user, authenticates access. However, this type of authentication can
`be circumvented by hackers.
`A better form of authentication, biometrics, depends on the user’s presence and biological
`makeup (i.e., retina or fingerprints). This technology makes it more difficult for hackers to
`break into computer systems.
`The Public Key Infrastructure (PKI) authentication method uses digital certificates to prove
`a user’s identity. There are other authentication tools, too, such as key cards and USB
`tokens. One of the greatest authentication threats occurs with email, where authenticity is
`often difficult to verify. For example, unsecured emails often appear legitimate.
`
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`What is Authentication? - Definition from Techopedia
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`https://www.techopedia.com/definition/342/Authentication
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