Security experts from Cyble reported that a threat actor is attempting to sell twenty-nine databases on a hacker forum since May 7. Forum members could also buy each database individually. The archives allegedly contain a total of 550 million stolen user records.
Data appears to come from past data breaches, the oldest one dates back as 2012 while the latest one dates April 2020.
The data could be used by crooks to launch credentials stuffing attacks against individuals and organizations.