There are well over a million viruses in the world, with many more created daily. ![]() In the worst-case scenario, they can wipe all the data from your hard drive in just seconds. Viruses can steal your passwords and change your login data to lock you out of your email and social media profiles, online banking accounts, or even your computer. When executed, they can spam your email and social media contacts, corrupt files on your hard drive, and slow down your computer. If your computer is part of a network, just one user opening a compromised file on their desktop could be enough to take the entire network down.Īlthough there have been some “good” viruses with helpful effects on host machines, computer viruses are bad by definition. ![]() You can then spread the virus by sharing infected files or links with others. There are many ways how you can contract a computer virus – via file downloads, email attachments, compromised software installations, or scam links on social media. When they do, the virus will start executing its code and cause damage to the host computer. Designed to spread from one host computer to another, a computer virus latches onto a piece of software or a document and remains there until a user opens the file in question. A computer virus is executable malicious software or code that self-replicates by taking control of other programs on an infected computer.
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