Industry anti-virus tests would be the easy answer, but unfortunately, not all vendors participate. Cylance is one of several so-called next generation AV vendors that say they rely on a combination of machine learning and algorithms to detect malicious behavior. Many security software applications still rely on signatures – frequently updated descriptions of known harmful code – to detect malware. New approaches by next-gen AV vendors mean some malicious code may not be detected right away. Some vendors fear a poor result on a simplistic test will cast a pall over their products.”]
Source: https://www.govinfosecurity.com/blogs/cylance-to-engage-in-av-software-tests-p-2204