Cyber security experts warn that information from a half-billion Facebook users has been posted to a website used by hackers.
Those records include full names, locations, e-mail addresses and phone numbers for 32 million Americans.
Facebook claims that this is old data previously reported in 2019, and that the social media company found and fixed the issue at that time.
However, internet security experts believe the data could still be of value to hackers and cyber criminals who specialize in identity theft.