Simon Willison’s Weblog

Bit Twiddling Hacks. I’ve never been much of a bit twiddler, but I’ve always felt I should learn.

Posted 2nd November 2007 at 6:49 am

Recent articles

Video: Building a tool to copy-paste share terminal sessions using Claude Code for web - 23rd October 2025
Dane Stuckey (OpenAI CISO) on prompt injection risks for ChatGPT Atlas - 22nd October 2025
Living dangerously with Claude - 22nd October 2025

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