 How do I prevent changes to the things in options? Is there a master password? I-Firefox Isithangami Sokweseka Ukwesekwa kwe-Mozilla21718 16:05Umsebenzisi oyi-ejenti: Mozilla5.0 Windows NT 6.3; Win64; x64; rv:58.0 Gecko20100101 Firefox58.0DictionaryBoss 8.405.12.17724 _v4Members_ AkusebenziDM 100.3.3 DownloadManager AkusebenziEverydayManuals 8.405.12.18022 AkusebenziTrackaPackage 8.405.12.20692 Akusebenzi21718 17:5321718 20:3921718 21:45 