If the disconnected device is indeed suspicious, to keep your information safe, you should change your { -product-firefox-account } password in your account settings. You should also change any other passwords you saved in { -brand-firefox } by typing about:logins into the address bar.
Deskonektatutako gailua susmagarria bada, zure informazioa seguru mantentzeko zure { -product-firefox-account } pasahitza aldatu behar zenuke kontuaren ezarpenetan. Era berean, { -brand-firefox }(e)n gordetako beste edozein pasahitz ere aldatu beharko zenuke, helbide-barran about:logins idatziz.