OpenAI confirmed a security incident involving a third-party vendor, Mixpanel, which exposed some user data. The incident occurred within Mixpanel’s systems and involved limited analytics data related to your API account.
Here are the critical details you need to know:
1. What happened?
The Breach: This was not a direct breach of OpenAI’s own systems. Instead, hackers breached Mixpanel, a data analytics company that OpenAI uses to track how people use their API website (
platform.openai.com).Timeline: Mixpanel discovered the breach on November 9, 2025, and notified OpenAI on November 25. OpenAI made it public yesterday (Nov 26).
2. What data was stolen?
The breach affects API users (developers and businesses using OpenAI’s tools), not necessarily standard ChatGPT users.
Exposed:
Names and email addresses.
Approximate locations (City, State, Country).
Device details (Browser and Operating System).
NOT Exposed (Safe):
Passwords & Credentials: Your login info is safe.
Chat History: No conversations or prompts were accessed.
Payment Info: Credit card details remain secure.
API Keys: The keys used to access the API were not stolen.
Also Read : Mixpanel Analytics | Why was OpenAI using it
3. Am I at risk?
If you are a standard ChatGPT user (using the app or chatgpt.com), this likely does not affect you. This breach specifically targeted data related to the API platform interface.
However, because email addresses were exposed, API users should be on high alert for phishing emails. Scammers may use the stolen emails to send fake security alerts trying to trick you into revealing your actual passwords or API keys.
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