2FA requires an additional piece of information (like a one-time code sent via text message) to log in to your account.  Even if someone has your password, they can’t get in.
Mae dilysu dau gam yn gofyn am ddarn ychwanegol o wybodaeth (fel cod un-tro a anfonir trwy neges destun) i fewngofnodi i'ch cyfrif. Hyd yn oed os oes gan rywun eich cyfrinair, does dim modd iddyn nhw gael mynediad.