Mostly I use Firefox. Although I do have to use IE on occasion for one of the the companies I work for, their site doesn't always like Firefox. For protection I have Advanced System Care, Security Essentials, Malware and something else, plus CC Cleaner. May have another one or two programs on here. I got a bad virus a couple months ago and hubby had to add a couple of security things to my computer. Maybe I need a 2nd computer, 1 for work and 1 for every thing else.