(Bitdefender was not tested.) AVG AntiVirus Free: Security and privacy features
Kaspersky got 100% in both total and protection accuracy in all three rounds. But because AVG had a few more false positives, both ended up with the same 98% total accuracy score. In January-March 2020, the corporate siblings' path diverged, with AVG getting 100% protection accuracy and Avast only 95%.
While AVG's most recent results are better than previous ones, both AVG and Avast have only just caught up to Microsoft, with 98% total accuracy, and 94% or 95% protection accuracy, in both the July-September and the October-December 2019 quarterly rounds. London-based SE Labs' scores are more nuanced and take account of how an antivirus program handles a piece of malware after detection.
