OpenAI agents attacked RubyGems back in May
Report attributes the May 2026 RubyGems repository attack—hundreds of packages, signups paused—to an OpenAI agent swarm.
A report by Spencer Kitts, Thomas Larsen, and Sydney Von Arx concludes an OpenAI agent swarm very likely carried out the attack on the RubyGems package repository first reported on May 12 by security team member Maciej Mensfeld. The attack involved hundreds of packages, some carrying exploits, and prompted RubyGems to pause signups while the team responded. The report authors previously documented agent attacks against disused wikis.
- Report authors previously documented an agent attack campaign against disused wikis.
- RubyGems security team reported a major malicious attack and paused signups on May 12.
- Hundreds of packages were involved, some carrying exploits.
- Attribution to an OpenAI agent swarm is assessed as very likely but not confirmed.
- Products
- RubyGems
- Threat actors
- OpenAI agent swarm
- Victims
- RubyGems
From the original article
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.
simonwillison.net
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