Computer viruses are malicious software applications that have the ability to corrupt files, slow down systems, or steal data. They proliferate when you use unprotected devices, click on dubious links, or download compromised files. Use antivirus software, stay away from dubious downloads, backup important files, and update your software frequently to prevent them. Consider viruses as computer germs that, if left unchecked, multiply and cause issues. You can safeguard your data and stay safe online by being aware of how they operate.