Short definition: Active Directory OU delegation is granting scoped, task-specific permissions on Organizational Units (OUs) to security groups—without domain-wide admin rights—so teams can safely manage only what they must.
Why OU delegation matters now
Modern AD estates are bigger, more hybrid, and more frequently touched by non-admins than ever. Help desks need to reset passwords…
Auditing Nested Group Memberships: An Expert Guide
September 29, 2025
Auditing nested group memberships for security risks: the expert’s comparison guide
Reading time: ~14–18 min • Last updated: 2025-09-29
Nested groups are convenient, flexible, and dangerously opaque. This guide shows how to audit them properly in Active Directory and Microsoft Entra, with path-aware reporting, Windows event alerts, and Graph transitive queries.
…
Google patches Chrome zero‑day CVE‑2025‑10585 — active V8 exploit; update now
Critical zero‑day
Google patches Chrome zero‑day CVE‑2025‑10585 — active V8 exploit; update now
Published: September 19, 2025 • Last updated: September 23…
Managing AD metadata cleanup post-DC decommission: A Playbook
September 9, 2025
Active Directory behaves as if that DC never existed. This guide goes beyond “delete in ADUC” and covers DNS SRV/CNAME integrity, KCC recomputation, lingering objects, and RODC specifics.
Focus: metadata cleanup
Covers: ADUC/ADSS/ntdsutil
Also: DNS SRV, KCC, DFSR, RODC
Quick nav
Why this matters now
Definition & blind spots
Under the hood
Production-ready Runbook
Inherent…
SID filtering in complex AD layouts: the one-bit boundary that decides what crosses your forest
September 9, 2025
Quick definition: SID filtering is a trust-side control that removes foreign SIDs—including values in SIDHistory—from a user’s authorization data as it traverses a trust. It prevents privilege escalation by honoring only the SIDs the trusting side expects.
Answer box (at a glance)
External/domain trusts: Quarantine=Yes by default → accept only SIDs from the directly trusted…
Transitioning AD schema versions safely: runbook & pitfalls
September 5, 2025
Active Directory
The schema is your forest’s data contract. When you raise its version—via adprep or app extensions—you change what can exist and how it behaves. This self-contained guide explains the why, the risks, and a precise runbook you can use in production.
Reading time: ~16–20 minutes
On this page
Why schema transitions matter now
What the schema actually is
First…
What is an N-Day Exploit? Definition, Mechanism & Security Risks
September 3, 2025
An n-day exploit targets a vulnerability after public disclosure, weaponizing the delay between a vendor’s fix and enterprise patch adoption.
Definition (snippet-friendly):
An n-day exploit is a cyberattack that targets a known software vulnerability after it has been publicly disclosed.
Attackers leverage the period when patches or mitigations exist but are not yet widely applied.
Table of…
FIDO Downgrade Attack Hits Microsoft Entra ID
September 2, 2025
Researchers show how spoofing unsupported browsers can force users off passkeys, exposing Entra ID accounts to phishing and session hijack.
Who/What/When: On August 13, 2025, security researchers detailed a FIDO downgrade attack against Microsoft Entra ID that manipulates login flows to sidestep passkeys.
Where/Why: By spoofing an unsupported browser, attackers trigger an error that removes…
Storm-0501 Exploits Microsoft Entra ID to Wipe and Ransom Azure Data
September 1, 2025
In August 2025, Microsoft warned that Storm-0501, a financially motivated ransomware group, is abusing Microsoft Entra ID and hybrid Active Directory synchronization accounts to seize control of entire cloud environments. Victims reported that attackers exfiltrated Azure data, deleted backups, and issued ransom demands over Microsoft Teams. For IT admins and security engineers, this marks a…
In today’s dynamic IT landscape, the need for organizations to be agile and adaptable is more pronounced than ever. Active Directory Domain Services (AD DS) stands as the cornerstone of organizational identity. While the allure of designing a brand-new AD infrastructure can be strong, especially with the ever-evolving features and security enhancements, the reality for most organizations is…
