Computer Viruses.

A calculating machine computer computer virus is an illegal and potentially damaging computer program designed to infect other software by attaching itself to any(prenominal) software it comes in contact with. In galore(postnominal) cases, virus programs are designed to damage computer systems maliciously by destroying or corrupting data. If the infected software is transferred to or accessed by another computer system, the virus breaks to the other system. Viruses take a crap become a serious problem in late years, and currently, thousands of known virus programs exist.

Three types of viruses are a boot firmament virus, file virus, and Trojan horse virus. A boot field virus infects the boot program. When the infected boot program executes, the virus is loaded into the computers memory. Once the Virus is in memory, it can spread to any floppy disk inserted into the computer. A file virus inserts virus codes into a program file. The virus wherefore spreads to any program that accesses the infected file. A Trojan horse virus (named after the Greek myth) hides within or is designed to smell like a legitimate program.

well-nigh viruses interrupt processing by freezing a computer system temporarily and then displaying sounds or messages. Other viruses contain time pelts or logic bombs. A time bomb is a program that performs an practise on a particular date.



A logic bomb is a program that performs an activity when a certain effect occurs, such as an employee being terminated. A worm, which is similar to a virus, copies itself repeatedly until no more memory of disk outer space remains.

To find computer viruses, anti-virus programs have been developed. Besides detecting viruses, anti-virus programs in any case have utilities to remove or repair infected programs and files. Some damaged files cannot be repaired and must be replaced with uninfected enrolment files.

Companies could literally lose thousands of...

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