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…
Active Directory high availability
Design for the worst day: local logons at branch speed, safe failover by intent—not accident.
RODC
Sites & Services
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Password Replication Policy
Definition (snippet-ready): AD high availability with RODCs and…
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…
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…
In an enterprise IT environment, controlling the permissions and actions of the Windows Installer is crucial for maintaining security and consistency. Allowing the Windows Installer to use elevated permissions during program installations can lead to unexpected changes and…
In a managed IT environment, ensuring the consistency and security of software installations is essential. Allowing regular users to change installation options during the installation of an MSI package can lead to configuration discrepancies and potential security risks. In…
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…
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…
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…
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…
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…
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…
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