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Story summary
- OpenAI terminated its partnership with Mixpanel after a data breach exposed limited user data.
- The breach occurred on November 9, 2025, from a smishing attack on Mixpanel and exposed names, emails, and locations.
- OpenAI confirmed its systems were not compromised and no passwords or payment data were exposed.
- OpenAI is notifying affected users and reviewing its vendor ecosystem to prevent incidents.
- Users are advised to remain vigilant against phishing attempts.
