2FA would be great to have but is difficult in a pure P2P context. If you have any suggestions how to do that - we would be very interested.
Only solution which might fit would be BitcoinAuthenticator but I think it is not maintained anymore and might be a bit of complicate for most users.
In future we want to integrate Trezor.
For now I recommend to not use Bitsquare as a savings wallet with a lot of funds. Use Trezor or another hardware wallet, that is the safest way.
Beside that if people are using the recommended measurements (write down wallet seed words, use a password, make a backup) there should be a reasonable protection.
Such protection is of course limited: If your computer is infected with a key logger, you are lost with most wallets (beside hardware wallets and 2FA).