Incident description
No. of exposed accounts
265,160
Exposed data
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Safety warning: This website has been breached or has been part of a data leak.
There isn’t any record of a massive data breach on GitHub.com compromising user emails publicly available. There were two incidents that might be what you’re referring to:
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Accidental Leaks: In 2023, millions of authentication secrets were unintentionally exposed in public GitHub repositories https://www.bleepingcomputer.com/news/security/github-rotates-keys-to-mitigate-impact-of-credential-exposing-flaw/. This wasn’t a breach by GitHub itself, but users accidentally uploading sensitive data.
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Limited Private Repository Compromise: Earlier in 2022, an attacker gained access to data from a limited number of private repositories through stolen OAuth tokens https://www.flosum.com/blog/reflecting-on-github-cybersecurity-breach-2022. GitHub emphasizes it was a targeted attack and not a general breach of their systems.
It’s always good practice to stay vigilant about these issues. If you’re concerned about your GitHub account, you can enable two-factor authentication for an extra layer of security.