When we talk about computer security, the virus is the leading threat. It can destroy a single program or the whole computer system instead. In , the first hacker-made virus came into existence and spread through Apple floppy drives. According to Information-Technology Promotion Agency, the numbers of viruses ballooned to 52, in However, due to certain programs that completely eliminate viruses, their numbers decreased to about 14, in Other threats include Trojans, adware, worms, and malware, among others.
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April 13, Rhinoviruses are a major cause of the common cold and may contribute to about half of asthma flare-ups. Researchers have now completed sequencing the genomes of all the known rhinovirus types, setting the stage for the development of medications and vaccines to combat the viruses. The cold is the most common illness known, bringing the sneezing, scratchy throat and runny nose that we're all familiar with. People in the United States have an estimated 1 billion colds each year. More than different viruses are known to cause the symptoms of the common cold.
A computer virus is a form of malicious software that piggybacks onto legitimate application code in order to spread and reproduce itself. Like other types of malware , a virus is deployed by attackers to damage or take control of a computer. Its name comes from the method by which it infects its targets.
The purpose of this paper is to discuss various types of computer viruses, along with their characteristics, working, effects on the computer systems and to suggest measures for detecting the virus infection in a computer system and to elaborate means of prevention. The author undertook an extensive study and review of the literature available online and on relevant web sites on the present topic. A large number of viruses were found during the study, which are causing serious damages to computer systems. The author suggests ways to detect and prevent the different computer viruses.