![]() People continue the spread of a computer virus, mostly unknowingly, by sharing infecting files or sending e-mails with viruses as attachments in the e-mail.Ī worm is similar to a virus by its design, and is considered to be a sub-class of a virus. It is important to note that a virus cannot be spread without a human action, (such as running an infected program) to keep it going. ![]() Almost all viruses are attached to an executable file, which means the virus may exist on your computer but it cannot infect your computer unless you run or open the malicious program. Much like human viruses, computer viruses can range in severity: Some viruses cause only mildly annoying effects while others can damage your hardware, software or files. Knowing the Differences Can Help You to Better Protect your ComputerĪ computer virus attaches itself to a program or file so it can spread from one computer to another, leaving infections as it travels.
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