Well this is getting out of hand.
You think the box that just popped up is asking you to protect your computer. It says you could be at risk. You will be if you click.
The box that just opened may look legit, but it is not. The fake antivirus programs change so fast it is hard to keep up with them.
I just had one try to infect my system during a download of a driver I needed. We all have to watch and be carefuel not to click to fast. Because the program you think may be trying to keep you safe, is in fact the virus itself.