I'm running Avira,IOBIT Security 360 (Antispyware), and Sygate firewall. Very rarely do I have a problem, but when I do it's a snap to fix. When you do decide which route to take, remember to update, update, update...Avira will update automatically, 360 will let you know when there is a new update, and Sygate really doesn't need updating..One prior word of warning tho, if yo do get Sygate, you will have to "train" it so it will know what to allow to run. If you are planning on having very personal information on your puter, it needs Fire walling. Cool thing is that if someone tries to hack you, it has a function called "Back Trace". It will tell you the perp's tele#, street addy, IP addy, and name. Someone tried to hack me onetime before, and "Back Trace" informed me that it was the "Dept. of Homeland Defense" I sent them a very nasty email (yes that's included too), and to this day, they have NEVER tried that stunt again. If this can block that, it can block just about anything! Good luck, and stay virus free!!!