Simon Willison’s Weblog

Tip: Configure SAX parsers for secure processing. Explains the billion laughs attack, among others.

Posted 23rd August 2008 at 11:12 am

Recent articles

V&A East Storehouse and Operation Mincemeat in London - 27th August 2025
The Summer of Johann: prompt injections as far as the eye can see - 15th August 2025
Open weight LLMs exhibit inconsistent performance across providers - 15th August 2025

billionlaughs 2 elliotte-rusty-harold 7 sax 2 security 541 xml 104

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