Correct, and not only is it never in the clear over the network, the key is stored such that Mozilla cannot decrypt your content. https://support.mozilla.org/e

Correct, and not only is it never in the clear over the network, the key is stored such that Mozilla cannot decrypt your content. https://support.mozilla.org/en-US/kb/firefox-sync-data-secure-find-out-more https://support.mozilla.org/en-US/kb/firefox-sync-data-secur...