Simon Willison’s Weblog

24th January 2009 - Link Blog

OWASP: XSS Prevention Cheat Sheet. Comprehensive set of rules for avoiding XSS—there’s a bit more to it than just escaping all output variables, since you have to take markup context in to account.

Posted 24th January 2009 at 11:58 pm

Recent articles

The new GPT-5.6 family: Luna, Terra, Sol - 9th July 2026
sqlite-utils 4.0, now with database schema migrations - 7th July 2026
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This is a link post by Simon Willison, posted on 24th January 2009.

markup 8 owasp 4 security 614 xss 60

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