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.
Ronojel ri awetamab'al ximon rik'in { -brand-name-firefox-account } — pa ri runatab'al awokem pa k'amaya'l k'a ri ewan taq tzij — ewan kisik'ixik. Ri ewan rutzij rub'i' ataqoya'l, xa xe rik'in ri' yatikïr yatok chupam.