An illegal service that sells personal data of US citizens online, which can then be used for identity theft hacked into the networks of three major data brokers and Hacker stole their databases. The service, known as SSNDOB (SSNDOB) used malware to obtain secret access to the databases of LexisNexis, Dun & Bradstreet and Kroll Background America. The service’s main website at ssndob.ms has been taken offline, but similar services can be found online.
Source: https://thehackernews.com/2013/09/hacker-sold-personal-data-of-4-million.html