Hi chloestreit, That Safe Search is a browser hijacker - let's get rid of it : First go to Firefox's Preferences => Addons => Extensions, and see if there are any suspicious looking extensions listed there - if so : remove them. Do the same in your system's Preferences. As most malware will be 'hiding' somewhere - you should run malware scans, as listed in this article : https://support.mozilla.org/en-US/kb/troubleshoot-firefox-issues-caused-malware '''Run all the scans that are listed there - what one program may overlook, the other one will find.''' Also see : https://malwaretips.com/blogs/remove-safesearch-net-mac-os/ Everything back to normal ?