computer viruses

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Computer viruses

Introduction and background

A virus is an instruction in the computer a software that has the capability of reproducing itself without the authority of the user and contaminates or corrupt the computer system . A virus has gt two major characteristics .First it must reproduce itself . For instance it can replace other s with its own copy which is infected . Secondly ,It has the ability to give effect to itself . It actually places its own system o the way of completion

to another program

There is a clear difference between the virus and worms and trojan horses . Unlike the virus ,worms propagate itself to other computers without th necessity of host transfer .A worm has sends a document that has worm inside the document .Trojan horse refers to a that appears inoffensive

viruses have made it quite cumbersome for people to identify them because some of them are never visible when a program is in effect but immediately the infected system is operated ,it gives the virus a clear war to get in . This advocates for the more reason to use spy ware programs

With the current expansive use of the new information and technology system ,viruses also tend to increase in numbers with it ,because they take advantage of network services like Internet and local area network due to the fact that most personal computers are connected to the Internet . Some viruses have programs are completely destructive to a computer system because they erase s and even re-arrange he hard disk yet there are some that are completely harmless as they only reproduce themselves in copies and make recognition of their presence through texts and audio messages . But however how harmless they tend to be they can still cause trouble because they occupy a computers memory illegally resulting in system crash and data loss

History of Viruses

History has it that the computer virus detected was in the beginning of 70s . It spread itself through the operating and had the ability to make use of any modem connected so that it could dial out and propagate itself in remote computers . Another view that had its conception in the early 80s was that 'Rother J 'which came about by a high school student who originals idea was a joke . It was meant to be a computer game . Its procedures was to be used only 49 times but when the game was begun it Ran for 50th time but instead of playing it emerged to a blank screen with a message concerning one virus called elk cloner ' thereby infecting the computer instantly

In 1986 , the Farooq Alvi brothers from Pakistan created a virus called brain . Initially the idea was to stop piracy in their software they had come up with . However ,its been argued that a virus called Ashar a difference of brain could probably have been dated earlier based on the code

Before the spread of networks ,the virus propagated itself in the...