From this article at eWeek: http://www.eweek.com/print_article2/0,1217,a=194218,00.asp
"The recent surge in e-mail spam hawking penny stocks and penis enlargement pills is the handiwork of Russian hackers running a botnet powered by tens of thousands of hijacked computers.
"Internet security researchers and law enforcement authorities have traced the operation to a well-organized hacking gang controlling a 70,000-strong peer-to-peer botnet seeded with the SpamThru Trojan."
Peter
