Now, I don't use anti virus software. (I know better than to click random things on the internet). My family however... not so much. We've used Norton's for years, and after paying $125 for essentially one device, enough is enough. (I'm not paying for it myself, I just forget my mom has it... until I get the email it was renewed). I'm not sure if windows defender is enough for them. What are some good options, that aren't so resource intrusive? We've used Kaspersky before, I personally have ne...