Underground Web sites can be a useful barometer for the daily volume of criminal trade in stolen credit card numbers. Badb.su offers an a-la-carte, card-checking service that allows buyers to gauge the validity of stolen cards before or after purchasing them. Site administrators urge customers to quickly test the cards by making real purchases online. Site also sells verified PayPal and eBay accounts. Site boasts its own bug bounty program, offering to pay hackers who discover flaws in the sites machinery.”]
Source: https://krebsonsecurity.com/2012/03/banking-on-badb-in-the-underweb/