I have and keep up to date Eset Smart Security and never have any problems. I also run Ccleaner 45,000 time a day. Now when I read here I need to spend at least another $60 to prevent intrusion on top of Esets SS. H.I.P.S. cost $30 and I suppose Sandboxie cost $30. I personally think Sandboxie would be a royal pain. The things I do write to the hard drive constantly. There is a whole plethora of other programs recommended here. Which would cost an additional how many $. Also all this would bog down the Puter. It has been my experience that people use what they started with and recommend it to others without during an exhaustive study of other programs on the market.