https://www.bleepingcomputer.com/news/security/facebook-data-leak-now-under-eu-data-regulator-investigation/

Ireland's Data Protection Commission (DPC) is investigating a massive data leak concerning a database containing personal information belonging to more than 530 million Facebook users.

"Previous datasets were published in 2019 and 2018 relating to a large-scale scraping of the Facebook website which at the time Facebook advised occurred between June 2017 and April 2018 when Facebook closed off a vulnerability in its phone lookup functionality," the DPC said.