Computer virus is a program that “infects” computer files (usually other executable programs) by inserting copies of itself in those files. This is usually done in such a manner that the copies will be executed when the file is loaded into memory, allowing them to infect still other files, and so on. Viruses often have damaging side effects, sometimes intentionally, sometimes not.
Once a particular virus is identified then software can be written to detect and remove it from the system. This is a utility program for computers. Such programs, which are capable of detecting and removing viruses, are known as anti - virus software. It is obviously far more efficient to avoid being infected with a virus in the first place, even if there are viral-detection and viral-killer programs available. It is a good idea to get frequent updates of any inoculation software, so that your system is protected against the latest viruses.
Once a particular virus is identified then software can be written to detect and remove it from the system. This is a utility program for computers. Such programs, which are capable of detecting and removing viruses, are known as anti - virus software. It is obviously far more efficient to avoid being infected with a virus in the first place, even if there are viral-detection and viral-killer programs available. It is a good idea to get frequent updates of any inoculation software, so that your system is protected against the latest viruses.
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