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Active Directory Security

Get the latest updates from Active Directory Security directly as they happen.

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Latest posts

Last updated 6 days ago

BSides NoVa 2025 Presentation Slides Posted

6 days ago

My BSides NoVa talk slides are now posted. My BSides NoVA talk...

Microsoft Interview

6 days ago

A couple years ago, the Microsoft Security Experts Blog interviewed me regarding...

Active Directory Security Tip #13: Kerberos Delegation

10 days ago

Review the membership of groups for accounts and groups from another Active...

Active Directory Security Tip #12: Kerberos Delegation

12 days ago

I have mentioned in several presentations that Kerberos delegation is impersonation. Kerberos...

Active Directory Security Tip #11: Print Service on Domain Controllers

15 days ago

The Print Spooler service is a default service on Windows Servers and...

A History of Active Directory Security

15 days ago

During the Summer of 2024, I had a talk at Troopers called...

Active Directory Security Tip #10: FSMO Roles

17 days ago

Getting Microsoft supported backups of Domain Controllers is an important part of...

Active Directory Security Tip #9: Active Directory Backups

19 days ago

Microsoft supported backups of Active Directory are very important to have. For...

Active Directory Security Tip #8: The Domain Kerberos Service Account – KRBTGT

28 days ago

The domain Kerberos service account, KRBTGT (https://adsecurity.org/?p=483), is an important account since...

Active Directory Security Tip #7: The Tombstone Lifetime

29 days ago

The Tombstone lifetime (TSL) in Active Directory is the limit as to...

Active Directory Security Tip #6: Domain Controller Operating System Versions

about 1 month ago

Ensuring proper Domain Controller configuration is key for Active Directory security. Part...

Active Directory Security Tip #5: The Default Domain Administrator Account

about 1 month ago

In every Active Directory domain, there’s the default domain Administrator account. Here...