OpenAI discloses API user data breach via third-party Mixpanel

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OpenAI discloses API user data breach via third-party Mixpanel

Cyberinsider • November 27, 2025

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A security breach at Mixpanel, a 3rd-party analytics provider used by OpenAI, exposed user metadata from OpenAI's API platform.

The full story

This article is one source in a clustered incident — the cluster page carries the summary, timeline and every other outlet covering it.

OpenAI API Users Affected by Mixpanel Data Breach OpenAI confirmed a data breach at its analytics provider, Mixpanel, which exposed limited analytics data linked to OpenAI API users. The breach involved unauthorized access to Mixpanel's systems, resulting in the export of customer identifiable information. Affected users are being notified by OpenAI. 55 sources 52

Extracted Entities

Attack Types (1)

Companies (2)

Mixpanel OpenAI

Platforms (1)

OpenAI API Platform