I always find if it's a trusted program, but reviews? If you go to xyz.com review says *Guai AV it's great, but if you go to zyx.com says GUAI AV is crap. IF you have got an AV company and you pay, the review will be the best, but if you ndon't pay, your AV is a s***
I always read reviews of a lot of users, p eg this forum, and my experience.
*GUAI AV is an exemple, doesnt's exist