Essay about Computer Viruses
812 Words4 Pages
One thing that all computer users may have in common is fear of contracting a virus on their systems. A virus can be defined as ?a self-replicating/self-reproducing-automation program that spreads by inserting copies of itself into other executable code or documents.? It is also considered to be ?malware? (malicious software), which includes worms and Trojans as well. Even though many types of anti-virus software exist, not every computer user utilizes these programs, which are not 100% effective. There are different types of computer infections, some more common than others. A virus is a piece of software that attaches itself to another executable program, becoming a part of the program itself. A worm, however,…show more content…
But you have to wonder why these destructive programs are created to begin with. Viruses do not evolve by themselves; they must have a creator to write their code and begin their distribution. Some people psychologically can not help but to cause pain to others. They get a thrill out of watching others suffer, especially when they know it is caused by something they did. Nowadays, virus writers are likely working with spammers and hackers, turning it into a business instead of a hobby. These people are in the business to hack into computers and steal confidential information. Various companies, such as McAfee and Symantec, have developed antivirus software that tries to prevent or stop attacks on systems. There are two main techniques used by these programs: they examine files to see if any compare to files in the virus dictionary, and they identify any suspicious behavior that is occurring on the computer. With the first technique, if any file matches one in the virus dictionary, the antivirus software either attempts to repair the file, quarantines the file, or deletes the file entirely. In order to remain at a maximum level of effectiveness, antivirus software performs a periodical, downloadable virus dictionary update. These updates can be scheduled through the program to automatically look for an update at a specified time. System scans can also be set up in this fashion, so the
Computer Viruses Essay
Viruses The word virus can be very disheartening, especially when computers are involved. A digital virus is a computer code composed of instructions hidden inside a program. These instructions can either be malicious or more stealthy, not letting their presence be known until it is too late. Regardless of the type you have encountered or will encounter either purposely or on accident, there is help. Software companies have been and will continue to be hard at work writing virus protection software to protect us and our computers from those nasty viruses.
"Viruses first appeared in 1985. Then, they were largly created in university laboratories by wayward geniuses keen to pit their programming skills against one another. Since then, errant programmers had began to create newer and more destructive viruses targeted at specific users groups" (Yang 1998). A computer virus can be as evil as it sounds, snaking its way into all computers both personal and business, posing an occasional annoyance or a serious threat to all data. Indications that you have encountered a virus can be anything from rather amusing to seriously fatal. Computer viruses act much like human viruses in that they spread rather quickly much similar to that of an epidemic, one unlucky computer is the host and before its known a whole slew of his friends computers have been infected, and fallen victim to its destructive code. Until the recent invention of the internet, virus epidemics were rather small and unheard of, as they could only spread by means of floppy disk. Now days, email is a major gateway to viruses allowing them to spread half way across the world in a few seconds, infecting millions of computers, crashing thousands of networks and servers, and costing billions to repair. Evidently technology is greater than it was 15 years ago, and thus has to be guarded against. Viruses can target anyone, anywhere and at any time, they yield no warning and leave a very distinctive path of destruction. Due to this devistation time after time, software companies and huge corporations were given no other alternatives but to fund the development of anti-virus software applications. Anti-virus software has come a long way from its earliest forms, coming on diskettes and taking a while to install, to coming on cd's and having an internet upgrade option to upgrade the virus protection software with the latest virus definitions.
Virus protection software is an essential piece of a computer in which no computer should be without. It can save you many heart aches, and catastrophies. For large companies, virus protection software can save millions of dollars in invaluable irreplacable data stored on the hard disks of their central server. Undoubtedly many companies are equipped with backups of their system recored onto data tapes and stored in file cabinets in case of such a disastrous situation, but had there been virus protection software on all the...
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