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What is a SID (Security ID)?

April 26, 2017Id security SID

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What is a SID (Security ID)?

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SID stands for Security Identifier and is an internal value used to uniquely identify a user or a group. A SID contain • User and group security descriptors • 48-bit ID authority • Revision level • Variable subauthority values For more information, see Microsoft SDK documentation: • $$$: Well-Known SIDs (http://premium.microsoft.com/msdn/library/sdkdoc/accctrl_416b.htm) • $$$: SID Components (http://premium.microsoft.com/msdn/library/sdkdoc/accctrl_26wj.