Hello Jacob, Your system details show that this extension is installed in <BR>Options => Add-ons => Extensions : "I don’t care about cookies 2.9.9" ...... If you didn't install it yourself, would you please remove it ? Even though this extension is listed on the official addons.mozilla''.''org page - would you please take a look at this : https://support.mozilla.org/en-US/kb/troubleshoot-firefox-issues-caused-malware Maybe run the malware scans that are listed in the above linked article (better safe than sorry .... )