All the information synced through your { -brand-name-firefox-account } — from browser history to passwords — is encrypted. And your account password is the only key.
Akk talɣut yemtawan d umiḍan-ik·im { -brand-name-firefox-account } — seg umazray-inek·inem n tunigin ɣer wawalen uffiren — yettwawgelhen. D awal uffir n umiḍan-inek·inem kan i d tasarut tasuft.