A researcher at ShmooCon DC this weekend will demonstrate a smartphone botnet spewing spam and unleash proof-of-concept code that builds a botnet out of Android and iPhone smartphones.
Georgia Weidman, an independent researcher, says her botnet attack evolved out of work she did on making an Android application send SMS text messages transparently such that the user didn't even know it was happening from his or her smartphone. "As I did more research, I [realized] if I did this in the base operating system instead of in 'userspace' where most apps are, it would be a better way to do it," she says. "If I can remotely control someone's phone, it can be part of a botnet."
More info: http://www.darkreading.com