
Your antivirus won't even know what has happened because the malware will not be known, it will be using an unknown vulnerabiliy and so it will literally, and I cannot emphasise enough, walk right on in. That's not a matter of maybe, it's a matter of when. Right now if there was to be a malware attack on particular operating systems with an unknown (0-day) vulnerability, EVERY SINGLE one of all of our computers running Windows would and could be infected. But it by no means as super effective as it is often advertised. Antivirus software is primarily used as a means to give people a sense of security and safety using their computers. If you do even a small amount of research you'll discover this for yourself.

In reality, 90% of antivirus is marketing. I wouldn't worry too much about the label.
