Event ID 639 - Security Enabled Local Group Changed
|Sub category||Security group management|
|Description||A security-enabled local group was changed|
When a security local group is changed in Active Directory, event ID 639 gets logged.
This log data gives the following information:
|Subject: User who performed the action||Security ID
|Group: Changed security local group||Security ID
|Attributes||SAM Account Name
Why event ID 639 needs to be monitored?
- Prevention of privilege abuse
- Detection of potential malicious activity
- Operational purposes like getting information on user activity like user attendance, peak logon times, etc.
- Compliance mandates
ADAudit Plus audits, reports, and alerts group management actions performed on distribution and security groups making Active Directory auditing much easier.
Event 639 applies to the following operating systems:
- Windows Server 2000
- Windows 2003 and XP
Corresponding event ID for 639 in Windows Server 2008 and Vista is 4735
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