Simon Willison’s Weblog

The Psychology of Security. I haven’t even started on this yet, but I bet it’s worth reading.

Posted 9th February 2007 at 1:27 am

Recent articles

GPT-5: Key characteristics, pricing and model card - 7th August 2025
OpenAI's new open weight (Apache 2) models are really good - 5th August 2025
ChatGPT agent's user-agent - 4th August 2025

bruce-schneier 30 psychology 5 security 532

Monthly briefing

Sponsor me for $10/month and get a curated email digest of the month's most important LLM developments.

Pay me to send you less!

Sponsor & subscribe