What Are Computer Viruses

A computer virus is a type of malicious software program that, when executed, replicates by inserting copies of itself into other computer programs, data files, or the boot sector of the hard drive. Viruses can disrupt system operations, corrupt data, and spread to other systems through networks, USB drives, and other media.

Unlike normal software, viruses require user action to propagate, such as opening an infected file or running a program. Some viruses remain dormant until certain conditions are met.

Understanding how viruses work is the first step in protecting your computer and personal information. Using antivirus software, keeping your system updated, and avoiding suspicious files are key preventive measures.