Record / data breach · United States · 2025-11-08

OpenAI API user profile data exposed in a breach at analytics vendor Mixpanel

data breachAI eraconfidence 95named

An attacker got into part of Mixpanel's systems and exported a dataset that included profile data on users of OpenAI's API platform and some ChatGPT users who filed help tickets. Fields included name, email, coarse location, OS and browser, referring sites and account IDs. OpenAI says no chats, API data, keys, passwords or payment details were involved. It removed Mixpanel from production and ended its use of the vendor.

Organization
OpenAI · openai.com
Country · sector
United States · Artificial intelligence
Dates
occurred 2025-11-08 · disclosed 2025-11-26 · published 2026-09-26
Tags
llm-app, data-exposure, ai-era

Sources

Defenses for this class of incident

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A data breach sits in these classes of the AI-security landscape. The companies below work on that class of problem. This is a taxonomy, not a claim that any of them would have changed this incident.

HeimWall Operator
AI data governance
United States · est. 2025
SaaS postureAI data governance
Israel · est. 2021 · raised $32M
SaaS postureAI data governance
Israel · est. 2025 · raised $30M
AI data governance
Israel · est. 2024 · raised $40M
AI data governance
Israel · est. 2024 · raised $61M

Vendor data: AI Security Startups Map by Prompt Security (CC BY 4.0), synced daily. startups.prompt.security. Paid placements are labelled Sponsored; HeimWall, which runs this site, is labelled Operator. 453 companies in the directory.

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