Hi &nbsp; ! Search.hmyquickconverter.com &nbsp; is a browserhijacker. Go to the 3-bar menu => Addons => and look for any unfamiliar or suspicious looking extensions, like e.g.: SafeSearch Incognito SearchAssist Incognito When you find any : &nbsp; remove them. Also look in : &nbsp; Advanced => Network tab => Under : 'Offline Web Content and User Data' However : &nbsp; most malware will be 'hiding' somewhere , so let's run malware scans : Further information can be found in this article : <BR> https://support.mozilla.org/en-US/kb/troubleshoot-firefox-issues-caused-malware?cache=no <BR> '''Run most or all of the listed malware scanners.''' <BR> They all work differently &nbsp; - &nbsp; what one program doesn't pick up, the other might. Also see : https://malwaretips.com/blogs/remove-search-hmyquickconverter-com/ Virus scan for Mac : https://www.malwarebytes.com/mac/