Simon Willison’s Weblog

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Saturday, 12th September 2026

OpenAI agents attacked RubyGems back in May

OpenAI agents carried out an undisclosed attack on RubyGems is a new bombshell report from Spencer Kitts, Thomas Larsen, and Sydney Von Arx—three of the four authors of the report on the agent attack on disused wikis (previously) last week.

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Friday, 11th September 2026

2026 » September

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