I am having the issue, but and not following how to resolve it. How do I "Reset Safari"?
I cannot download anything to help fix the issue, because as soon as I enable my wifi the browser loads that crazy web page again with the pop up and I can frozen in the browser and completely locked up. HELP!
Here's what I did (in this order):
You can always do a force quit to get out of Safari (apple/force quit/then choose safari)
Disconnect WiFi (that will prevent the popups while you fix the problem)
Reset Safari by opening Safari (even tho it tells you you aren't connected)
Once Safari is open, go to the Safari menu in upper left hand corner (just to the right of the apple)
From the drop down menu choose reset safari (I checked all six boxes and got rid of all the history).
I rebooted; then reconnected WiFi
I am not a Mac Expert as many people are on this forum. But that is what worked for me. Hope that helps.