Cybercrime Gangs -ZdNet

Superzonda
Superzonda have been known to be a threat for at least the last two years. The BBC reported in July 2003 that Superzonda operated 24 hours a day, seven days a week, all over the world. Until recently they were sending 50 million spams a day, but recent anti-spam legislation has reined them in.

The BBC also reported that Superzonda used British Airways without its knowledge to host a Web site advertising Russian mail order brides.

HangUp
HangUp, based in Russia, is suspected of writing viruses that steal financial information. Reports claim that they plant software bugs to steal passwords, and rent out huge networks to send out viruses and spam. HangUp allegedly has 4,000 members operating worldwide, including Americans, Brazilians, Britons, Russians, and Spaniards.

ShadowCrew
ShadowCrew were a massive underground network of criminals who bought and sold credit-card details, social security numbers and identification documents. They sold credit-card numbers, email accounts, passports, driver's licenses and student IDs, and were estimated to have caused over US$4 million in losses for card issuers and banks. However, the US Secret Service broke up the gang in 2004.