DeadCow Trojan

DeadCow is a dangerous spyware, which usually sneaks into the computer as an attachment from suspicious e-mail letters. Once a careless user runs this file, DeadCow Trojan infects his or her PC and gives the hacker a partial control over it. This means this hacker can do almost everything he or she wants; for example, the hacker can remove different files, change computer settings, etc.