Hi mkboconnor, thank you for sharing your Add-ons list. The one named "Search Encrypt - A Private Search Engine" sticks out at me as a potential culprit. You can view, disable, and often remove unwanted or unknown extensions on the Add-ons page. Either: * Command+Shift+a (Windows: Ctrl+Shift+a) * "3-bar" menu button (or Tools menu) > Add-ons * type or paste '''about:addons''' in the address bar and press Enter/Return In the left column of the Add-ons page, click Extensions. Then cast a critical eye over the list on the right side. Any extensions Firefox installs for built-in features are hidden from this page, so everything listed here is your choice (and your responsibility) to manage. Anything suspicious or that you just do not remember installing or why? If in doubt, disable (or remove). Any improvement? ---- Next question: where did that come from? Unfortunately, free software often arrives in a bundle with stuff you don't want. You should check everything recently installed, and I suggest also scanning with the following tool to look for potentially problematic software: https://www.malwarebytes.com/mac/ (Note: as a Windows user, I haven't tried the Mac version myself.)