Understanding security threats in Windows 7, is of the utmost importance for professional and personal users alike. When people speak of security threats on their personal computers, they are generally referring to viruses, which can infect your computer in many ways.A virus is a program that can replicate itself,  it usually does this by attaching itself to another object such as an e-mail attachment. Viruses are generally a destructive program designed to corrupt data files and delete installed programs on your PC, and possibly damage the operating system.Other security threats such as worms and spyware also need to ...