Thousands of cyber-criminals have had their personal data leaked online after a popular carding forum was hacked, according to Group-IB. The Singapore-based security firm said it discovered that data belonging to users of the Swarmshop site was leaked to another underground forum on March 17. “The database was posted on a different underground forum and contained 12,344 records of the card shop admins, sellers and buyers including their nicknames, hashed passwords, contact details, history of activity and current balance,” explained Group-IB. “In addition to user data, the database exposed all compromised data traded on the website, including 623,036 payment card records issued by the banks from the US, Canada, the UK, China, Singapore, France, Brazil, Saudi Arabia, Mexico; 498 sets of online banking account credentials; and 69,592 sets of US Social Security Numbers and Canadian Social Insurance Numbers.”