The document discusses the growing threat of mobile botnets and their potential to infect smartphones on a massive scale. It outlines how existing Android and Symbian botnets have infected over a million devices and describes how future mobile botnets could utilize SMS and other infection methods. The presentation warns that smartphones could become "mini ISPs" if security measures are not improved to prevent botnets from using the devices to broadcast malware. It concludes by emphasizing the need for manufacturers, researchers, and organizations to collaborate on addressing this emerging threat.