Account Management Event: 661

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Account Management » Event ID 661 - Security Enabled Universal Group Member Removed

Event ID 661 - Security Enabled Universal Group Member Removed

Event ID 661
Category Account management
Sub category Security group management
Description A member was removed from a security-enabled universal group

When Active Directory objects such as an user/group/computer is removed from a universal security group, event ID 661 gets logged.

This log data gives the following information:

Subject: User who performed the action Security ID
Account Name
Account Domain
Logon ID
Member: Removed user/group/computer Security ID
Account Name
Group: Universal security group from which the object was removed Security ID
Group Name
Group Domain
Additional Information Privileges

Why event ID 661 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

Pro tip:

ADAudit Plus audits, reports, and alerts group management actions performed on distribution and security groups making Active Directory auditing much easier.

Event 661 applies to the following operating systems:

  • Windows Server 2000
  • Windows 2003 and XP

Corresponding event ID for 661 in Windows Server 2008 and Vista is 4757

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