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OpenAI Confirms Mixpanel Breach Affecting API User Data

OpenAI Confirms Mixpanel Breach Affecting API User Data

First seen 27 Nov 2025, 08:33 UTC • •

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ThreatCluster AI
ThreatCluster •March 12, 2026 at 13:27 UTC

OpenAI has confirmed a security incident involving Mixpanel, a third-party analytics provider. The breach occurred within Mixpanel's systems, allowing an attacker to gain unauthorized access and export a dataset containing limited identifiable information of some OpenAI API users. OpenAI clarified that its own infrastructure was not compromised in this incident.

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