Simon Willison’s Weblog

Spammers embrace email authentication. “More spam than legitimate email is currently sent using Sender Policy Framework”

Posted 3rd September 2004 at 6:43 pm

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

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