Virus can spread by many way, depends on the hacker who made it.
Some virus will infect your computer immediately when you visit a website. But some are harmless until you click on file which was infected.
There are many type of virus nowadays: trojan, macro, rootkit,....you can find more information on norton, kaspersky site.
reproduction
A virus is a piece of code that attaches itself to a program or file so it can spread from computer to computer. They can also try to damage your software, your hardware, and your files. To protect your PC from virus, you'd better enable one antivirus program on your computer.
Elk Cloner
Yes, most of the computer virus have security threat to the infected computer. If your computer has been infected with virus, you should remove it quickly.
if its a computer virus,then call comcast or the computer network you have.
Yes, I belive it can as the virus can spread anywere
Very.Half a split second.
A piece of code that attaches itself to a file to spread itself from computer to computer.
A virus is a piece of code that attaches itself to a program or file so it can spread from computer to computer. A worm, like a virus, is designed to copy itself from one computer to another, but it does so automatically.
emailfilesharepop-upswebpages
No. It was not. There was a Trojan horse that was lethal. Your computer would "destroy" itself and spread the virus without you knowing.
will i did not scan my PC before i backed up my computer then after it finish backing up i scanned my PC. Norton internet security 2011 found Trojan virus so it deleted. Then next day i scanned my back up drive it found the same virus that infected my PC so that one way Trojan can spread.