Security Identifier Archives

Winsage

September 27, 2026

Google researcher explains why Windows NT “puts Linux to shame,” and imagines an alternate history where it won

Laurie Kirk, a Google researcher and former Microsoft reverse engineer, argues that the Windows NT kernel is superior to Linux in several aspects, particularly in its architecture for managing resources and access permissions. She emphasizes that her critique focuses on the system architecture rather than the user interface of Windows 11. Kirk raises concerns about Linux's suitability for AI agents due to its complex security model, while praising NT's object-based design and security framework. She speculates on an alternate history where Microsoft had created an "Open NT," allowing for customizable components, but acknowledges the challenges of maintaining forks in operating systems. Critics of NT highlight its performance and reliability issues, while Linux's open-source nature has contributed to its dominance in servers and cloud computing. Kirk suggests that future operating systems may need to balance the defined resource types of NT with the flexibility of Linux, especially as AI technology evolves.

Winsage

May 25, 2026

How I Changed the SID on My Windows Server Without Reinstalling (And Why You Should Care)

Cloning a Windows Server machine can lead to issues with duplicate Security Identifiers (SIDs). A Security Identifier (SID) is a unique string assigned to every machine, user, and group in Windows, functioning like a fingerprint. Duplicate SIDs can cause problems such as domain join failures, incorrect WSUS reporting, inconsistent Group Policy application, and licensing issues. The author initially attempted to use sysprep to change the SID after cloning, which resulted in stripping the domain join and causing SQL Server to fail. The author then discovered Wittytool Disk Clone, which includes a SID changer that successfully generated a new SID and updated all necessary references without disrupting the server's configuration or applications. The process took only six minutes and worked similarly on Windows Server 2019. It is more efficient to generate a new SID during the cloning process rather than afterward. Important precautions include taking a snapshot or backup before making changes and being aware that changing the SID on domain controllers is more complex. Reactivation of Windows may also be required after the SID change.