Data affecting more than 500 million Facebook users that was originally leaked in 2019, including email addresses and phone numbers, has been posted on an online hackers forum, according to media reports and a cybercrime expert.

“All 533000, 000 Facebook records were just leaked for free,” Alon Gal, chief technology officer at the Hudson Rock cybercrime intelligence firm, said Saturday on Twitter.

He denounced what he called the “absolute negligence” of Facebook.