// OpenaiMEDIUM
OpenAI disclosed that two employee devices were compromised on May 11, 2026 during a supply chain attack targeting TanStack, a widely used open-source library. The attack, part of the Mini Shai-Hulud campaign, resulted in credential exfiltration. OpenAI found no evidence of user data access or core system compromise but is forcing updates to the ChatGPT Mac app by June 12 as a precautionary measure.
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