Torpig botnet temporarily hijacked - by good guys

Researchers at the University of California at Santa Barbara took control of the Torpig/Sinowal/Anserin botnet for ten days in late January before the botnet's operators regained control.  The Torpig botnet is notorious for stealing financial information, apparently with good reason. While in control, the researchers found over 8,000 stolen banking credentials and over 1,600 credit and debit card numbers.

The researchers have published at report that details how the botnet operates, who it victimizes, and what types of data it is stealing.  The report is available at http://www.cs.ucsb.edu/~seclab/projects/torpig