What Anti-virus are you using now to protect your device? And why did you choose this one?
I've been using Avast anti-virus for a really long time (about 4 years if im not wrong) but only on free trial.I was satisfied so i didnt feel the need of changing it,
but of course the time has come and i decided using it would be just stupid.
I use Kaspersky currently,and i think it is the best anti-virus (from the one's i tried before)