Maybe.I agree with @L0ckJaw.
Personally, nothing but a good experience with Emsisoft. Now I'm trying out Microsoft Defender, with my subscription about to be expired. However, even though the system got infected, I am quite disappointed that the tester didn't commit all the way through and called it quits. Granted, I don't know what I'm doing with these tests, but I at least expected him to try a manual scan with Emsisoft afterwards. If only to see if just the real-time protection got bypassed and disabled, or the entire security solution crippled.
Question: Did Emsisoft got bombarded to the point that the Behaviour blocker simply could not keep up?
In fact, early version of WV had problems when too many samples run at the same time.
Developer said such condition not gonna happen in reality, but they fixed it anyway.