Twitter hacked, 200 million user e-mail addresses leaked, says researcher

LONDON – Hackers stole the e-mail addresses of more than 200 million Twitter users and posted them on an online hacking forum, said a security researcher.

The breach “will unfortunately lead to a lot of hacking, targeted phishing and doxxing”, Mr Alon Gal, co-founder of Israeli cybersecurity-monitoring firm Hudson Rock, wrote on LinkedIn on Wednesday.

He called it “one of the most significant leaks I’ve seen”.

Twitter has not commented on the report, which Mr 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.

Reuters could not independently verify the data on the forum was authentic and came from Twitter.

Screenshots of the hacker forum, where the data appeared on Wednesday, have circulated online.

Mr Troy Hunt, creator of breach-notification site Have I Been Pwned, viewed the leaked data and said on Twitter that it seemed “pretty much what it’s been described as”.

There were no clues to the identity or location of the hacker or hackers behind the breach.

It may have occurred as early as 2021, which was before billionaire Elon Musk took over ownership of the company last year.

Claims about the size and scope of the breach initially varied, with early accounts in December saying 400 million e-mail addresses and phone numbers were stolen.

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 United States Federal Trade Commission have been monitoring the social media company for compliance with European data protection rules and a US consent order, respectively.

Messages left with the two regulators were not immediately returned on Thursday. REUTERS