how to judge a virus software is good or bad ?

and do you think what ?

who can tell me ?

thanks!

Hmmm … how many ways to ask the same question?

I don’t think I want to play this game anymore. Bye.

One word, Research.

Yes, RESEARCH and after a lot of that, TRIAL. Start with Avast, and if it runs well then keep it, and don’t be concerned. Or you can spend several months, or a year and trial several. Some will run well and some will not. Some will have conflicts, and some may crash your system, but no one can predict that.

Probably at this point, considering your other post, no one can tell you much more. You will have to try one or more and go from there.

Again, Avast is a good place to start. My experience is that it runs well with no conflicts on the machines I have put it on, and no one that I know has ever been infected. What more do you need?
If it gives problems then you can get a lot of help here. That is what this forum is for, primarily.

Best,
Jerry