Event Details
User Activity->Policy Changes->Windows 2008->EventID 4912 - Per User Audit Policy was changed.
EventID 4912 - Per User Audit Policy was changed.
 Sample: 
        Per User Audit Policy was changed.

        Subject:
        Security ID:		%1
        Account Name:		%2
        Account Domain:		%3
        Logon ID:		%4

        Policy For Account:
        Security ID:		%5

        Policy Change Details:
        Category:	%6
        Subcategory:	%7
        Subcategory GUID:	%8
        Changes:	%9
Log Type: Windows Event Log
 Uniquely Identified By:
Log Name: Security
Filtering Field Equals to Value
OSVersion Windows Vista (2008)
Windows 7 (2008 R2)
Windows 8 (2012)
Windows 8.1 (2012 R2)
Windows 10 (2016)
Category Policy Change
Source Microsoft-Windows-Security-Auditing
TaskCategory Audit Policy Change
EventId 4912
Field Matching
FieldDescriptionStored inSample Value
When At what date and time a user activity originated in the system. DateTime
Who Account or user name under which the activity occured. Subject: Account Name
What The type of activity occurred (e.g. Logon, Password Changed, etc.) "Policy Change" Policy Change
Where The name of the workstation/server where the activity was logged. Computer
Where From The name of the workstation/server where the activity was initiated from. - 10.10.10.10
Severity Specify the seriousness of the event. "High" High
WhoDomain Subject: Account Domain
WhereDomain -
Policy Name The name of the affected policy. -
Whom Policy For Account: Security ID
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