Twitter hacked, 200 million user email addresses leaked, researcher says

Twitter has not commented on the report, which Gal first posted about on social media on Dec. 24, nor responded to inquiries about the breach since that date. It was not clear what action, if any, Twitter has taken to investigate or remediate the issue.

Hackers stole the email addresses of more than 200 million Twitter users and posted them on an online hacking forum, a security researcher said Wednesday.

The breach “will unfortunately lead to a lot of hacking, targeted phishing and doxxing,” Alon Gal, co-founder of Israeli cybersecurity-monitoring firm Hudson Rock, wrote on LinkedIn. He called it “one of the most significant leaks I’ve seen.”

Twitter has not commented on the report, which Gal first posted about on social media on Dec. 24, nor responded to inquiries about the breach since that date. It was not clear what action, if any, Twitter has taken to investigate or remediate the

A major breach at Twitter may interest regulators on both sides of the Atlantic. The Data Protection Commission in Ireland, where Twitter has its European headquarters, and the U.S. Federal Trade Commission have been monitoring the Elon Musk-owned company for compliance with European data protection rules and a U.S. consent order respectively.