No. Some downloads can have viruses attached to them so it's best to get anti-virus software.
Computer viruses only affect the memory of your computer. Say you get a virus and your computer will not let you open programs. You would need to get a new hard drive or wipe all data from the hard drive, and then reinstall programs.
Anti-viruses are very important, as they protect your computer from MOST (not all) viruses and other malicious programs.
There are hunderds of ways it will make your desktop differ. For example: - Computer Viruses could disable all programs you have. - Computer Viruses could turn off your Anti-Virus. - Computer Viruses could block Internet from you.
Yes, computer viruses are man-made malicious software programs designed to infect and harm computer systems.
you have to download viruses
I have never experienced any interruptions. I can even run other programs while it is scanning the computer for viruses.
Computer programs that do not have a positive outcome for your PC.
Many programs today have security features built-in which are designed to stop viruses from infecting your computer. The main program that does this though is called an anti-virus program. This type of program removes viruses from your computer and sometimes attempts to stop viruses from being installed or even downloaded. There are many free programs of this type, such as AVG or Microsoft Security Essentials.
Yes, there are certain viruses that get installed in your computer as extensions and start downloading random programs.
yes, viruses can do anything to the software of you computer viruses are files that contain code that cab tell your computer to do anything that it's creator programs it to do.
Different types of unsafe or unprotected websites or programs.
Although anti-virus programs try to keep an updated list of all computer viruses in existence, they obviously can't be 100% successful at that. Because of this, newer viruses that may have not been added to the definitions list of anti-virus programs are better at spreading across computer systems. Older viruses are much more likely to be detected, since anti-virus companies have had time to detect them and add them to their definitions list.