One I was warned about and unfortunately I did click on is what LOOKS like a valid ActiveX download. It is a pale, yellow bar, looks official enough but it really screws up your computer. I had to do a total destructive Recovery because of it. I'd do a screenshot to show you but it's not there right now. I will comeback when it comes back so you can see what I'm talking about. You hear a little "Blip" when it first comes on. Just don't EVER click on it. If you want ActiveX go to the official download site and get it or if you ever try to download some JAVA site it will give you the proper and official link right there to download it.
The bogus one you do NOT want to click on is a pale yellow and goes across the top of whatever page you are on. It isn't a BOX type pop-up. I think they do this format to trick people into thinking it's ligitmate but it's NOT. It's just another Pop-Up. Here is what it says:
This site might require the following ActiveX control: 'Adobe Flash Player Installer' from Adobe Systems Incorporated'. Click here to install...