Antivirus software has been essential for PC users for two decades, with advertisements emphasizing its importance. Windows 11 includes built-in security features, but many users prefer third-party antivirus solutions for quicker updates and additional benefits. User behavior significantly impacts computer security, and it is recommended to avoid links from unfamiliar email senders and not to reuse passwords. A comprehensive evaluation of antivirus applications involved testing on a Windows 11 PC using simulated virus attacks. The testing included scanning the SSD and consulting independent security testing laboratories. The best antivirus software for 2025 includes BitDefender Total Security as the best overall, Avira Free as the best free option, Malwarebytes Plus for the best VPN bundle, and Sophos Home Premium for protecting multiple devices.