A relentless battle against the bots.

Spam levels have remained resolutely stable despite recent botnet takedowns, according to a survey from Google's email filtering business.

Google Postini reports no lasting effect from the recent takedown of spam-spewing botnet, such as Mariposa and Mega-D. The command-and-control servers associated with the Mega-D botnet were isolated towards the end of 2009, effectively decapitating one of the top-10 junk mail sources.