I got onto a malware site that wants to scan my computer for viruses. There is currently a popup window that says "Threat Detected. Please click the Protect button to make your system safe." I don't want to do that. I can't close the popup by clicking the 'X' in the upper corner. No other options are available in Firefox. Everything is disabled until I press Protect. I restarted the computer and restarted Firefox, and the first thing I see is "Threat Detected". So I want to start a new session so the malware Tab won't open from the previous session. (I'm using Google Chrome to post this.) Many thanks....