Account Management Event: 666

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The Who, Where and When information is very important for an administrator to have complete knowledge of all activities that occur on their Active Directory. This helps them identify any desired / undesired activity happening. ADAudit Plus assists an administrator with this information in the form of reports. In real-time, ensure critical resources in the network like the Domain Controllers are audited, monitored and reported with the entire information on AD objects - Users, Groups, GPO, Computer, OU, DNS, AD Schema and Configuration changes with 200+ detailed event specific GUI reports and email alerts.

Account Management » Event ID 666 - Security Disabled Universal Group Member Removed

Event ID 666 - Security Disabled Universal Group Member Removed

Event ID 666
Category Account management
Sub category Distribution group management
Description A member was removed from a security-disabled universal group

When Active Directory objects such as an user/group/computer is removed from a universal distribution group, event ID 666 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 distribution group from which the object was removed Security ID
Group Name
Group Domain
Additional Information Privileges

Why event ID 666 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 666 applies to the following operating systems:

  • Windows Server 2000
  • Windows 2003 and XP

Corresponding event ID for 666 in Windows Server 2008 and Vista is 4762

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