533 million Facebook users' phone numbers and personal data have been leaked online

A user in a low level hacking forum on Saturday published the phone numbers and personal data of hundreds of millions of Facebook users for free online.

The exposed data includes personal information of over 533 million Facebook users from 106 countries, including over 32 million records on users in the US, 11 million on users in the UK, and 6 million on users in India. It includes their phone numbers, Facebook IDs, full names, locations, birthdates, bios, and — in some cases — email addresses.

Insider reviewed a sample of the leaked data and verified several records by matching known Facebook users' phone numbers with the IDs listed in the data set. We also verified records by testing email addresses from the data set in Facebook's password reset feature, which can be used to partially reveal a user's phone number. A Facebook spokesperson told Insider that the data was scraped due to a vulnerability that the company patched in 2019.

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