Not one protection guards against everything. That is, you may encounter folk that think such protection should work even if the owner installs a bad thing.
OK, hold on a moment. This is a -> Personal Computer <- where you can do almost anything you please, including installing malware and more. So the real answer is for us to not install anything we are unsure of.
Did you figure out where the virus came from?
I have a new HP Pavilion 23 running Windows 8. I had hard drive errors, and possibly a virus, which Office Depot fixed. The repair tech suggested I activate Windows Defender. He said McAfee (which I have) is having too many "issues."
I would appreciate feedback on this topic. As noted in my previous postings, I am concerned with viruses, spyware, malware, adware, etc.
I would appreciate feedback on the subject.... Thank you!!!!!