Are you near an Apple store? If you need to clean out malware that is external to Firefox, you might give them a try, or the apple.com support forums. ---- With respect to what is happening in Firefox, could you describe the circumstances: what action do you take that triggers the redirect, i.e., following a link in search results? Have you reviewed all your add-ons and disabled any that do not sound 100% trustworthy? You can do that here: Tools > Add-ons > Plugins ''and''<br> Tools > Add-ons > Extensions If the unwanted software changes search settings, those can be reset manually, but yeah, it's a hassle to re-do that over and over, so it's important to clear the root cause.