We used Norton Enterprise NAV for the last 9 years at work, and are changing to Sophos AV. I have never been a big fan of Symantec / Norton's home products. AVG comes highly rated, and McAfee does as well. My best advise it to not connect directly to the internet providers modem, make sure you have a firewall / router that protects you from outside attacks, and don't click / open links or attachments at random. Oh and Porn sites are not the ones that get you all messed up, they want you to come back