I've been using AVG for years and have never had a problem. They notify you every time they block some malware and viruses. I used AVG Free for many of those years and never had a problem. I started using paid version a couple of years ago so I could protect email and all. Still have had no virus nor malware. AVG, in my opinion, is the best on the marker. I tried all the others, and the two largest antivirus companies, let me get infected and destroyed my software. I worked for a municipality, and our IT guy introduced me to AVG, which he was using to protect our computers. I downloaded AVG Free and have never had a problem since.