Norton 360 Deluxe is recognized as the best overall antivirus software, offering a user-friendly interface, minimal performance impact, and robust malware protection. Bitdefender Total Security is noted for its comprehensive features, while McAfee+ Ultimate is recommended for families with multiple devices. Other notable antivirus solutions include Microsoft Defender as the best free option, Avast Premium for banking security, and Malwarebytes Plus as a budget-friendly choice. When selecting antivirus software, consider effectiveness, system impact, compatibility with devices, desired features, and budget. Free antivirus options like Microsoft Defender provide basic protection, while paid versions offer advanced features and support. Antivirus software works by scanning for malicious code and blocking threats, and it is essential for safeguarding against evolving cyber threats.