What is a Boot Sector Virus?

Category: Computer Viruses Tags:

A boot sector virus is a computer virus which infects the boot sector on hard disks, floppy disks, and theoretically also other bootable media such as CD's and DVD's.

A boot sector virus does not need to be able to successfully boot the victims computer to infect it. Because of this, even non-bootable media can spread a boot sector virus....

How computer viruses work?

Category: Computer Viruses Tags:

All computer viruses need to be run in order to be activated. Once activated, a virus may replicate into only one program at a time, it may infect some randomly-chosen set of programs, or it may infect every program on the system. Sometimes a virus will replicate based on some random event or on the current value of the clock.

In general a virus performs four actions. ...

How can I know if my computer got a virus?

Category: Computer Viruses Tags:

After you open and run an infected program or attachment on your computer, you might not realize that you’ve introduced a virus until you notice something isn’t quite right. Some computer viruses alert you to their presence by putting an unexpected message on your screen.

Here are a few primary indicators that your computer might be infected:...

What is a computer virus?

Category: Computer Viruses Tags:

Computer viruses are small software programs that are designed to spread from one computer to another and to interfere with computer operation without your knowledge and runs against your wishes. A computer virus that can make a copy of itself over and over again is relatively easy to produce. A virus might corrupt or delete data on your computer, use your e-mail program to spread itself to other computers, or even erase everything on your hard disk.

A computer virus exhibits two characteristics:...