Cybersecurity · Artificial intelligence

Writing on cybersecurity — how systems fail, and who they fail.

I write about cybersecurity — how systems fail, who they fail, and what we keep getting wrong about both. This site is the permanent home of the Friday Wrap Up newsletter — published weekly from 2024 to 2026, now retired — and everything since.

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When an AI Assistant Stores a False Memory

A single email can lead an AI assistant to record something false about a user, without disclosing that it has done so, and then draw on that false record in later sessions. The technique requires no …

Jul 14, 2026·6 min read

Vulnerability Exploitation Is Moving Faster. What the 2026 Time-to-Exploit Data Shows

Jun 26, 2026·5 min read

The AI Agents Already Inside Your Network May Not Show Up in Your Data Loss Prevention

Jun 21, 2026·4 min read