Cybersecurity

Twitter Security Headaches Mount With User Data Leak Claim

Database posted on hacking forum is alleged to contain email addresses and handles for more than 230 million Twitter users.

Twitter’s headquarters in San Francisco.

Photographer: David Paul Morris/Bloomberg
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An anonymous user on a hacker forum has published a massive database that they claim contains basic information on more than 230 million Twitter users, such as email addresses and screen names.

The database, which was posted on Wednesday, contains the names and email addresses of politicians, journalists and bankers, among others. The data was siphoned out because of a flaw in Twitter’s software, experts say, which has since been fixed.