Johannes Stillig

Writing

Notes on AI, security and technology - and which of it survives a normal Tuesday.

Latest - 15 Sept 2026 The parser is a trust boundary. No one audits it. The first program that reads a stolen dump decides the count you defend to a regulator, and it ships with no attestation. Count K, fingerprint the parser, bind every record to its source bytes.

Earlier

08 The most important file is the one that isn't there 26 Aug 2026 · 18 min 07 An address is not a person 19 Aug 2026 · 9 min 06 The dump is a claim, not a receipt 12 Aug 2026 · 11 min 05 A judge ran the same prompt three times and got three different answers 5 Aug 2026 · 19 min 04 The attacker can prove what they took. You can only prove what you logged. 29 Jul 2026 · 11 min 03 I let AI agents run my life. They can read everything and send nothing. 28 Jul 2026 · 12 min 02 AI writes code faster than you can review it. Here is what I did about it. 28 Jul 2026 · 9 min 01 Hello, world 28 Jul 2026 · 1 min