Delete a Message
antp
The question is: does it come from the ad or do you have something already on your computer that "interacts" with the ads?
cf what one can find when searching on that domain name:
https://malwaretips.com/blogs/remove-s-thebrighttag-com/
https://www.virusguides.com/remove-s-thebrighttag-com/
http://www.cyber-technews.com/remove-s-thebrighttag-com/
http://computer-tips.info/how-to-delete-s-thebrighttag-com/
http://forums.mozillazine.org/viewtopic.php?f=37&t=2967347
etc.
(Though that I'm not sure the links for downloading removal tools on these sites are safe, I'd rather check for the manual methods explained in these articles :D)
cf what one can find when searching on that domain name:
https://malwaretips.com/blogs/remove-s-thebrighttag-com/
https://www.virusguides.com/remove-s-thebrighttag-com/
http://www.cyber-technews.com/remove-s-thebrighttag-com/
http://computer-tips.info/how-to-delete-s-thebrighttag-com/
http://forums.mozillazine.org/viewtopic.php?f=37&t=2967347
etc.
(Though that I'm not sure the links for downloading removal tools on these sites are safe, I'd rather check for the manual methods explained in these articles :D)