Specific computer virus?
Keyloggers, Backdoor, and spyware are those specific virus.
Solutions to a specific computer virus need to be diagnosed on a case by case basis. But there are general steps to prevent computer virus. Proactive Support: involves finding the best anti-virus and anti-malware tools. Prevention: involves understanding how viruses and other sorts of malware can infect your computer. Virus Removal: if your computer does become infected with a computer virus or spyware, you will need to clean it off.
A virus has a specific string or line of code. When a virus enters a system, it is usually coded to infect a certain part of the computer, for example, the boot sector. When a virus reaches its destination, it injects the code. The virus itself isn't harmful, the code it injects is. Viruses don't replicate. Worms do that.
If you get a virus in your computer, you should take the computer to some place like Geek Squad (located within Best Buy) or to a Mac Genius (if you own a Mac) in order to get help removing the virus. If you still have a different computer that works, you can find information online about how to remove specific viruses.
What is a specific website to download a virus- say if you need one get a new computer from your school?
Usually you wouldn't use the term antidote when discussing computer viruses, but I can see how that term would be used. An antidote, in this context, would be a program designed to eliminate a specific virus from your computer. You could consider an anti-virus program an antidote, but as I said you usually wouldn't call it that.