computer virus
A computer virus is a computer program that can copy itself and infect a computer. A true virus can only spread from one computer to another (in some form of executable code) when its host is taken to the target computer; It can be trasmitted through floppy disk, CD, DVD, USB drive or external hard drive www.allbusiness.com/technology/computer-software-antivirus. Viruses can spread to other computers by infecting files and folders on a network file system, a file system that is accessed by another computer or even a windows file (operating system file).
The term "computer virus" is sometimes used to include all types of malware. Malware includes computer viruses, worms, trojan horses, most rootkits, spyware, dishonest adware, crimeware, Keylogger and other malicious and unwanted software, including true viruses. Viruses are sometimes confused with computer worms and Trojan horses, which are technically different.en.wikipedia.org/wiki/Computer_virus A worm can exploit security vulnerabilities to spread itself to other computers without needing to be transferred as part of a host, and a Trojan horse is a program that appears harmless but has a hidden agenda. Worms and Trojans, like viruses, can cause harm to either a computer system's hosted data, functional performance, or networking throughput, when they are executed. Some viruses and other malware have symptoms noticeable to the computer user, but many are surreptitious.
Reinstalling the OS is the best method of removing viruses.www.online.tusc.k12.al.us/tutorials/viruses/viruses.htm
The term "computer virus" is sometimes used to include all types of malware. Malware includes computer viruses, worms, trojan horses, most rootkits, spyware, dishonest adware, crimeware, Keylogger and other malicious and unwanted software, including true viruses. Viruses are sometimes confused with computer worms and Trojan horses, which are technically different.en.wikipedia.org/wiki/Computer_virus A worm can exploit security vulnerabilities to spread itself to other computers without needing to be transferred as part of a host, and a Trojan horse is a program that appears harmless but has a hidden agenda. Worms and Trojans, like viruses, can cause harm to either a computer system's hosted data, functional performance, or networking throughput, when they are executed. Some viruses and other malware have symptoms noticeable to the computer user, but many are surreptitious.
Reinstalling the OS is the best method of removing viruses.www.online.tusc.k12.al.us/tutorials/viruses/viruses.htm
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