Simon Willison’s Weblog

(somewhat) breaking the same-origin policy by undermining dns-pinning. This is the best technical explanation of the DNS rebinding attack I’ve seen. The linked demo worked for me in Safari but not in Camino.

Posted 2nd August 2007 at 12:53 pm

Recent articles

OpenAI are quietly adopting skills, now available in ChatGPT and Codex CLI - 12th December 2025
GPT-5.2 - 11th December 2025
Useful patterns for building HTML tools - 10th December 2025

camino 6 dnsrebinding 2 safari 43 samedomain 3 security 569

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