I have all of a sudden all these words highlighted with small green circles and arrows at the top right, angle, and when I hover over them a window opens with coupon

It's really annoying because I need to work and it just get in the way. They are like spam links. How can I prevent these.
Thank you
David

Sounds like Malware, see this:
https://support.Mozilla.org/en-us/KB/troubleshoot-Firefox-issues-caused-malware

Tags: Firefox

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