How can a computer be affected by a computer virus?

Answer 1

an infected diskette is inserted into the disk drive, the virus can be copied into the computer system.

The most common ways viruses enter your system are through files added to your systen through removable media such as diskettes, files, downloaded from the internet, and files attached to e-mails.

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Diskettes.... They go back a bit! :-)

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Timely then, was something I heard on the radio only this evening: businesses have sometimes been attacked from within by a sneaky physical Trojan Horse trick in which the attacker (usually a rival trying to steal commercial secrets) discreetly drops a USB stick close to the victim's front door. The hope is that some staff member will pick it up and out of unthinking curiosity, take into work and plug into his or her office computer to see what's on it. The finder does not see much, but the attackers do, unless the company's IT system is very heavily protected. One protective method allows data traffic to and from only the firm's own authorised and encoded external devices, so the computer cannot read from or write to any randomly-found or employee-owned USB stick .

Answer 2

it become infected with viruse when u download proggram and install it and its fake just to kill your computer system.... for an example:u download a proggram like called YouTube downloader but when u install it.. it change the system settings and over write some stupid data that shutdown and restart and sleep and load all computer in 1 proggram and it get lagged when u install it the PC load the system to be turned on but when that become installed it load a wrong file that kill your PC! hope this helped

Answer 3

A computer is subject to a virus if; you open a email attachment from a stranger who possibly could be a spammer, you click on links in emails from people who aren't your friends or relatives, if, you go on websites that are inappropriate or unknown to you. Also, if suddenly a pop up window shows up, don't click on nothing, I mean nothing, just hit the power off button as fast as you can. These are all dangerous.

Answer 4

A computer infected by a virus stops behaving normally! A computer virus is bad program that is maliciously developed to affect the functioning of a normally. The virus can be got from the internet or other memory devices when connected to the computer.

You can protect your computer using a virus guard.

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The first bit is not necessarily true at all nowadays. Modern attacks are usually designed to steal personal or company information such as financial details and bank-account access, and they will not want to make their presence known by affecting the computer's function or performance noticeably..

Answer 5

going onto a site,clicking a pop-up, or downloading software

Answer 6

The hard drive program files is always infected so always run a daily scan in this area to prevent it from getting any viruses. REMEMBER NEVER TO DOWNLOAD UNTRUSTED THINGS OF THE INTERNET!!

Answer 7

it depends on which virus you have