Personal information leaked because of an earlier vulnerability on Facebook, Inc (NASDAQ:FB) has reportedly been made freely available online.

What Happened: Business Insider reported that the personal information of 533 million Facebook users has been posted on a "low level hacking forum," without specifying the forum.

News of the information being posted for free came from Alon Gal, co-founder & CTO of cybercrime data business Hudson Rock.

Business Insider said it had seen and verified a sampling of the records in the leaked data by cross-referencing them with the data of known Facebook users.

Business Insider said it even tried to contact the leaker on the Telegram messaging app but did not get a response.

Why It Matters: The data includes information such as phone numbers, full names and birth dates of users from 106 countries, including the U.S., the U.K. and India. 

See also: Best Investment Apps

Facebook said the data leak resulted from a vulnerability that was fixed in 2019, according to several media reports.

But now it appears the already-stolen data has resurfaced, and it could be used by in hacking and scamming attempts.

Photo from Pixabay.