2.1.1.13 Per SecurityContext
SIDs: An array of SID structures, as specified in [MS-DTYP] section 2.4.2, representing the security identifier of the user performing an operation and the security identifiers of all groups of which the user is a member.
OwnerIndex: An index into SIDs indicating the SID of the user.
PrimaryGroup: An index into SIDs indicating the SID of the user's primary group.
DefaultDACL: An ACL structure, as specified in [MS-DTYP] section 2.4.5, representing the default DACL assigned to new files created by the user.
PrivilegeSet: A set of privilege names, as specified in [MS-LSAD] section 3.1.1.2.1, representing the privileges held by the user.