Simon Willison’s Weblog

When Ajax Attacks! Web application security fundamentals. Slides and notes from my talk on web application security at @media Ajax last Tuesday.

Posted 20th September 2008 at 4:16 pm

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The Summer of Johann: prompt injections as far as the eye can see - 15th August 2025
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LLM 0.27, the annotated release notes: GPT-5 and improved tool calling - 11th August 2025

ajax 61 atmediaajax 2 atmediaajax2008 1 csrf 49 javascript 718 security 540 slides 12 speaking 117 my-talks 90 xss 60

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