Systems, cloud, AI, and writing
CTO, Deputy CISO and Technical Fellow, Microsoft Azure.
Creator of the Sysinternals tools, co-author of the Windows Internals series, and author of the Jeff Aiken cyberthrillers. Current work spans Azure engineering, AI security research, and a podcast with Scott Hanselman.
Current work
Scott & Mark Learn To
Biweekly conversations with Scott Hanselman on AI, engineering craft, and systems — recorded on video, usually with real code on screen.
Latest episode: Polypost: A Multi-Platform Post Editor
AI and agent security
Papers on agent security, jailbreaks and red teaming, unlearning, and planet-scale infrastructure, each linked to the paper and its publication venue.
Explore
Books
The Jeff Aiken cyberthrillers plus the Windows Internals and Sysinternals references, with Amazon links and ratings.
Blog
Technical deep dives and industry commentary, from the Sysinternals-era classics to recent posts.
About Mark
Background, speaking, writing, and the through-line from Windows internals to cloud and AI research.