why there are computer virus?
111098
Some people know how to program and get a thrill thinking about all the havoc they can cause with a virus. Or they like the noterity it brings in the evil-hacker community.\n\nBasically, a more technical version of vandalizing stuff.
87698
It isn't cleaned or removed because it isn't a virus. It's a system file, an index of the files in that folder, like a table of contents for the computer to read.
491156
Viruses come in all shapes and danger levels.  There is everything from trojans to everday viruses.  Most of these either alter data on your computer or they gather data from your computer for a certain person or company.  Either way they are dangerous.  There are some major ones taht alter boot data and cause your computer to no longer be able to start up properly.  Many of them some from websites without you knowing or from downloads (which you never download from someone that you do not know).  Get good antivirus software and keep it up to date and you should have no problems with it.\n\nOh, and most boot-up viruses do nto go away by reformatting your hard drive as they will "hide" in your RAM chips.  There are some sneaky ones out there, so make sure that you keep a good antivirus program on your computer, keep it active, and keep it up to date.
445823
Most of these have deadly viruses. You have to be exceedingly careful.
1111624
it gets viruses from the computer
106204
Not all scripts are viruses. Examine the applications that start upon Windows boot and decide is there an aplication that couls seem as a virus :)\n\nAslo check the AV app settings to see for some usefull options :)
714060
Hacking is obvious, but also make sure someone is not surfing on the server. This is opening the chances of viruses. Constantly updating definition device on the AntiVirus program.
200969
I DON'T KNOW, BUT HERE'S AN INTERESTING TIMELINE ABOUT VIRUSES\n\nhttp://www.exn.ca/nerds/20000504-55.cfm
631227
there are no known virus for Mac computers. there has never been a virus for mac computers. \n\nunless you download yourself dumb files and run them.
1046207
I'd not worry about which are and which aren't (infected)...I'd run a virus program that scans, cleans, disinfects and deletes infected files on ALL computers.  That way you have no worries about trying to figure out which ones are, or aren't, and cover all the bases in one swoop!\n\nPS...try Panda Virus Scan, the professional edition...it's the best on the market, with hourly updates on newest viruses!
70401
Hey pal,\n\nNowadays making a virus is not so difficult, every programmers who worked more than 1 year can do this.\n\nSo there are alot of virus to find out.\n\nCiao,
1147946
I have no idea of why you are looking to infect your PC with a virus. However, if you are really desperate for a virus, open all bulk email attachments and you are bound to get more. Most people these days avoid them.
26355
In computers, a virus is a program or programming code that replicates by being copied or initiating its copying to another program, computer boot sector or document. Viruses can be transmitted as attachments to an e-mail note or in a downloaded file, or be present on a diskette or CD. The immediate source of the e-mail note, downloaded file, or diskette you've received is usually unaware that it contains a virus. Some viruses wreak their effect as soon as their code is executed; other viruses lie dormant until circumstances cause their code to be executed by the computer. Some viruses are benign or playful in intent and effect ("Happy Birthday, Ludwig!") and some can be quite harmful, erasing data or causing your hard disk to require reformatting. A virus that replicates itself by resending itself as an e-mail attachment or as part of a network message is known as a worm.\n\nGenerally, there are three main classes of viruses: \nFile infectors\nSystem or boot-record infectors\nMacro viruses
691099
A few years ago you could have argued that most viruses were made to annoy or to prove how smart the programmer is (or isn't as many of them managed to prove to the world).\n\nFor most modern viruses, unfortunately, the kick is money.  The viruses we've been seeing over the last three or four years have pretty much all been designed to take control of other people's computers - to form so-called botnets.  These botnets can then be used for a variety of (mostly illegal) purposes and they apparently can be traded and sold.\n\nTo take a fairly well-publicised example, botnets have been used to extort money from legitimate businesses by threatening to attack and take down their website at a critical time.
526238
Sometimes you can't actually delete a virus that already infected your computer, because some viruses spreads within seconds. No matter how you try to delete them, they just stay there and spread to other folders within your computer, an example of this virus is the worm and the brontoks. I'm using an old norton antivirus (symantect) with the version 2003, but still no virus has able to penetrate my computer! The most important thing is to always get updated with your antivirus definitions. The most important thing is do not visit hack sites, crack sites, warez, and especially some porn sites that are not safe! If you know that there is a virus in that website then do not visit that website again.\n\nMy suggestion is you can add some more details of what virus name had attacked your computer, so that we can help you how to kill the virus. Good Luck!
450111
sneakernet, local net, internet... whatever.\n\nAny path that data is able to reach your computer, so is a virus.
124152
viruses is too general.\n\nTrojans spread by hiding inside other things, usually email, though email is not the only vector.\n\nspyware does not usually attempt to spread once on your system....however, they use trojans/worms to open backdoors on the PC, and THEY will sometimes spread.  spyware comes in 2 flavors, broswer monitoring, and keyloggers-programs that record every keystroke pressed and send it via internet to a 'bad guy' somewhere. useful for collecting personal info and passwords, financial etc.\n\nhope this helps !