 Posing as ID thieves, they gather stolen personal information such as "dumps" (the raw encoded information contained on a payment or identification card's magnetic stripe, microchip or transponder), bank account numbers and login information, social security numbers, etc.They then pass this information on to the associated banks, to credit monitoring companies, or to law enforcement.Other groups specialize in the removal of phishing websites, fake banks, and fraudulent online storefronts, a practice known as "site-killing".