The most dangerous Rootkit

Dubbed "Mebroot," the rootkit infects the master boot record (MBR), the first sector of a PC's hard drive that the computer looks to before loading the operating system. Since it loads before anything else, Mebroot is nearly invisible to security software. "You can't execute any earlier than that," F-Secure's chief research officer, Mikko Hypponen, said.Once a machine is infected, the hacker