Russian underground forums offer 38 types of cybercrime goods and services that include anonymizing VPNs, distributed denial-of-service attack services, Trojan malware, rootkits, social engineering services and ransomware. Trend Micro says it has cataloged 78 underground Russian forums – of which 50 are active, and about 20 quite active. In the wake of the 2013 Target breach, for example, numerous security experts noted that stolen payment card data was being sold in batches on underground “carder” sites such as Rescator that allowed buyers to automatically check the validity of the card data being offered.”]
Source: https://www.bankinfosecurity.com/russian-cybercrime-markets-are-thriving-a-8439