Firefox announced an update a few days ago which I accepted, and on relaunch it attempted to reload all previously open tabs. A small second window appeared and tried to … (read more)
Firefox announced an update a few days ago which I accepted, and on relaunch it attempted to reload all previously open tabs. A small second window appeared and tried to load this URL:
The window went into a loop, waiting for a response and retrying until I cancelled the reload. I had cookies blocked and there were no open tabs that had anything to do with PayPal, they were all developer resources.
The URL points to a PayPal error page indicating there was a problem with a transaction and my account was not charged. No attempted charge should have happened.
I quit FF and relaunched and the same window appeared again, with the same URL but using a different token. I closed all open tabs, quit FF immediately, went to the Mozilla download page using Safari, downloaded the latest version and installed it. The suspicious window did not reappear on launch.
The next day FireFox put up another notice about an update, right on the heels of the last one. Were there two updates within a day of each other this week?
I could find nothing about this in a Google search. I should add that both update notices were standard Mac dialog windows, not popups from a web page. I was either in GitHub, Slack, or Asana at the time.
Does anyone know what might have caused it? It looks like a suspicious attempt to contact Paypal.
Mac OS X 10.11.6 FireFox 53.0