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…
A production-grade playbook for hybrid Active Directory and Microsoft Entra ID (Azure AD) inactive user account cleanup: signals, staged actions, reversibility, and governance—backed by copy‑paste runbooks.
On this page
Quick definition
Why the usual approach breaks
First principles
Production-ready technical core
Implications & trade-offs
Expert mental models
Misunderstandings &…
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…
DNS delegation architectures for multi-forest environments
September 5, 2025
Architecture • DNS • Active Directory
If you run more than one Active Directory forest, DNS is the fabric that lets users, apps, and domain controllers in one forest reliably find resources in another. The right DNS delegation architecture makes cross-forest name resolution fast, secure, and predictable—even in hybrid cloud.
Guide + Comparison
Updated: 5 Sep 2025
Reading time: ~16–18…
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…
How to raise AD forest functional level
May 29, 2024
What are Functional Levels?
An Active Directory functional level determines what capabilities of Active Directory Domain Services (AD DS) are available for a particular forest or domain. The functional levels are specified in terms of Windows Server versions, as each version update brings with it a host of new AD DS functionalities. Functional levels have to be specified because their…
Active Directory Users and Computers (ADUC) - An introduction and installation guide
February 4, 2021
Active Directory Users and Computers (ADUC) is a common tool used by administrators to carry out daily tasks and much more in Active Directory AD. Some of the tasks an administrator can perform with the help of this MMC snap-in are as follows:
Create and manage AD objects, such as users, computers, groups, and contacts, along with their attributes.
Create Organizational Units (OU)…
Group Policy Backup
February 4, 2021
What you will learn:
Group policies are critical pieces of instructions in an Active Directory environment used to configure a variety of advanced settings that can be applied to objects in the network. A set of Group Policy configurations are bundled as Group Policy Objects (GPO) which can then be applied to objects. IT administrators take weeks and months to create GPOs that are customized to…
Active Directory Maintenance Checklist
February 4, 2021
What you will learn from this article:
There are so many moving parts related to Active Directory (AD). So, it is important to know how to monitor, report, fix and diagnose issues related to the different supporting technologies. Identifying bottlenecks and resolving them before they cause much harm improves productivity, ensures efficient usage of resources, maintains consistency in data and…
Local Group Policy Editor
February 4, 2021
Group Policy in Active Directory (AD) simplifies the administrative burden and makes management a whole lot easier. When an administrator needs to control and configure settings on a local computer that is not part ofAD,settingsspecific to that computer can beconfigured in the Local Group Policy.
Multiple Local Group Policy objects are an enhancement to Local Group…
