Best antivirus software: 14 top tools

The AV-TEST Institute recently tested the most popular Windows 10 client antivirus products on three primary criteria: protection, performance, and usability. Only six of the 18 products tested earned a perfect rating of 6 for each of those criteria: Bitdefender Endpoint Security 6.6, Kaspersky Lab Endpoint Security 11, Kaspersky Small Office Security 6, Microsoft Windows Defender Antivirus 4.18, and Symantec Endpoint Protection 14.2 and Endpoint Protection Cloud 22.15. The top 14 antivirus offerings shown here in alphabetical order scored at least 17 points out of a possible 18.