Antivirus Software

Casio

Charles asks, "My smartphone (a Casio G'zOne) displayed a warning yesterday saying that it had a virus. I didn't do anything as I've been told the warning is the actual virus. How can I tell if the phone has virus protection installed? If not, can I download it for the phone?"

Ricky Romero / Flickr

Nancy asked, "I’m fairly new to Apple computers, and one of the reasons I made the switch from PC was to avoid viruses, hackers and other bad stuff. Should I install an antivirus program on my Apple laptop?"

DanMelinger / Flickr

Sandra writes, "Help! I keep getting pop -up ads on my computer even when I go to websites I know don’t have ads. Does my computer have an infection? How do I get rid of it?"