A computer virus has a similar appearance as an ordinary computer program, however, they are designed to spread from one computer to another and can interfere with computer operation. A virus’ purpose is to damage data, destroy other programs, and in most cases interrupt the normal operations of a computer. A virus can corrupt or delete data on your computer, use your e-mail to spread itself to other computers, or even erase everything on your hard disk. Viruses can be disguised as attachments and can be hidden in e-mail messages, instant messaging messages, illicit software or other files or programs you might download. Below is a list of some of the different types of viruses that can infect your computer. It’s important to select a virus scan and removal program capable of dealing with this variety of viruses. Boot Sector viruses: A boot sector virus can infect diskettes and hard drives. All hard drives and disks contain smaller sections called sectors. The first sector is called the boot. The boot carries the Master Boot Record (MBR). MBR functions to read and load the operating system. So, if a virus infects the boot or MBR of a disk, such as...