Archive · 29 Nov 2025
Data Breach at Mixpanel Affects OpenAI and CoinDCX
OpenAI and CoinDCX, two different companies, had a problem where some of their users' information was stolen.
This happened because another company that both OpenAI and CoinDCX worked with, called Mixpanel, was hacked.
The stolen information includes things like names and how long users have been using the platform.
OpenAI says that the important and private information from ChatGPT was not stolen.
They have stopped working with Mixpanel and are looking into what happened.
CoinDCX says that their users' funds are safe and that no sensitive information like passwords or bank details was stolen.
Both companies are telling their users to be careful about possible tricks to steal their data.
OpenAI and CoinDCX confirmed a data breach affecting user details due to a hack on Mixpanel, a service provider, on November 8-9, 2025.
Compromised data includes user names and the duration of their use at the platform for CoinDCX, and user names, email IDs, locations, operating systems, browsers, referring websites, and organization or user IDs for OpenAI.
OpenAI and CoinDCX assure that no sensitive data or user funds were exposed in the breach.
OpenAI has stopped using Mixpanel's services and is investigating the incident, while CoinDCX has collaborated with Mixpanel to confirm the containment of the breach and initiated a full review of Mixpanel's security posture.
Users are warned about potential phishing attempts following the breach.
- Who
- OpenAI, CoinDCX, and their users
- What
- Data breach affecting user details due to a security breach at Mixpanel
- When
- November 8-9, 2025
- Where
- Systems over Mixpanel
- Why
- Hackers extracted a dataset containing user information
OpenAI
CoinDCX
Date of Breach
OpenAI
November 9, 2025
CoinDCX
November 8, 2025
Compromised Data
OpenAI
User names, email IDs, locations, operating systems, browsers, referring websites, and organization or user IDs
CoinDCX
User names and the duration of their use at the platform
Response to Breach
OpenAI
Stopped using Mixpanel's services and is investigating the incident
CoinDCX
Collaborated with Mixpanel to confirm the containment of the breach and initiated a full review of Mixpanel's security posture
- Date of Breach (OpenAI)
- November 9, 2025
- Date of Breach (CoinDCX)
- November 8, 2025
- Affected Service
- Mixpanel
- Compromised Data (OpenAI)
- User names, email IDs, locations, operating systems, browsers, referring websites, and organization or user IDs
- Compromised Data (CoinDCX)
- User names and the duration of their use at the platform
- OpenAI's Response
- Stopped using Mixpanel's services, investigating the breach
- CoinDCX's Response
- Collaborated with Mixpanel to confirm the containment of the breach and initiated a full review of Mixpanel's security posture
- ChatGPT Data Exposure
- No sensitive data or ChatGPT servers were exposed
- CoinDCX Data Exposure
- No sensitive information such as passwords, OTPs, seed phrases, or critical KYC data was accessed
- CoinDCX User Base
- More than 20 million registered users
