Well my w7 days are well behind me Bazile, but advances by the scumbags do not stop. All I can really say is that if your w7 install is a genuine one and not a clone or copy, and that you are still receiving MSE updates I would stay with it. It is by far the easiest to use and understand without all the crip that comes with the third party set ups. I would suggest, if you have any concerns, that you have a look at Panda Cloud Antivirus. You will need a little thought though when it comes to your personal settings and what you allow to run in the background. But I hope you can all just take it for granted, any third party security set up is going to gobble up pc resources and use up wifi allowances if you are capped. When they say "free", all they mean is hidden costs.