The best antivirus software? Kaspersky, Bitdefender and Trend Micro lead in latest tests

The AV-TEST Institute recently tested the most popular Windows 10 client antivirus products on three primary criteria: protection, performance, and usability. Only four of the 16 products tested earned a perfect rating of 6 for each of those criteria: Bitdefender Endpoint Security 6.2 and 6.6, Kaspersky Lab Endpoint Security 11, Kaspersky Small Office Security 5 and 6, and Trend Micro Office Scan 12.