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AAA (Identification, Authentication, Authorization, Accounting)

Updated 31 Jul 2026

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def
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  a framework describing how users are identified and granted access to a system
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  the "I" in "AAA" is often said to be silent — identification precedes the three formally-named "A" components
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components
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  Identification — stating who you are
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  Authentication — proving who you are
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  Authorization — gaining access to what you're allowed to use
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  Accounting — logging who did what, and when
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related
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  Non-repudiation
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cards
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  What are the 4 components of AAA, and which one is 'silent'?
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    Identification, Authentication, Authorization, Accounting — the Identification 'I' is the silent one

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