By John Leyden
Posted in Enterprise Security, 22nd April 2009 11:59 GMT

Government and corporate Windows PCs were among the ranks of a 1.9 million botnet recently discovered by net security firm Finjan.

Finjan security researchers discovered the control server of the botnet after tracing back an infection from a corporate client. Evidence on the cybercrime server, which was hosted in the Ukraine, showed it had been in use since February 2009, and controlled by a cybergang of six people.

Trojan downloader malware planted on insecure websites was used to distribute the malware that seeded the botnet, via drive-by download attacks. The core group of cybercrooks were assisted by a vast affiliate network.

Continued @ The Register