Hello portnola,

Please don't blame Firefox - I'm afraid that you've somehow picked up some malware ......

See : https://malwaretips.com/blogs/remove-mackeeper-popup-ads/

Would you also read this article and run the malware scans that are listed there :

https://support.mozilla.org/en-US/kb/troubleshoot-firefox-issues-caused-malware?cache=no

Run most or all of the listed malware scanners. They all work differently - what one program doesn't pick up, the other might.

Especially for Mac : https://www.malwarebytes.com/mac/

Well said.

McCoy said

Hello portnola, Please don't blame Firefox - I'm afraid that you've somehow picked up some malware ...... See : https://malwaretips.com/blogs/remove-mackeeper-popup-ads/ Would you also read this article and run the malware scans that are listed there : https://support.mozilla.org/en-US/kb/troubleshoot-firefox-issues-caused-malware?cache=no Run most or all of the listed malware scanners. They all work differently - what one program doesn't pick up, the other might. Especially for Mac : https://www.malwarebytes.com/mac/

Um no...?

This happens on all my Macs. I have 3 desktops, a MBP and a MacBook Air. You really think I have Malware on all those macs???

portnola said

Um no...?
This happens on all my Macs. I have 3 desktops, a MBP and a MacBook Air. You really think I have Malware on all those macs???

Um, yes I do .....

Did you run the malware scans as suggested  ?

portnola said

This website time4tv.net relentlessly bombards me with popups

When you're on that site, click on the 'i' in a circle, next to the padlock at the left side of the address bar.

Then click on the little black arrow on the dropdown and then on "More Information", which will take you to "Page Info".

Click on the 'Permissions" tab and scroll down to "Open Pop-up Windows". Uncheck "Use Default" and check "Block".

Then close and restart Firefox.

As for that site trying to install MacKeeper : see my first post ....

I just did a fresh install of OS X High Sierra on a Mac Mini with FireFox 64 and it still does the same thing. Do you still think I have malware?

The only way to know for sure is to run the scans.

portnola said

Do you still think I have malware?

Based on your original post : yes, I do.

Have you tried any of the advice you've been given  ?

I noticed that you started a new thread that seems to be about Firefox not blocking pop-ups :

https://support.mozilla.org/en-US/questions/1244904

Re pop-ups - please see :

https://www.askvg.com/tip-how-to-block-all-unwanted-website-pop-ups-in-mozilla-firefox/

And maybe you'd consider installing uBlock Origin :

https://addons.mozilla.org/en-US/firefox/addon/ublock-origin/?src=search