Via OTP or TOTP, that’s why we at Tutanota highly recommend to activate a hardware key to protect your encrypted mailbox. It is also more secure than second-factor authentication U2F – second-factor authentication with a hardware security key – is the most secure way to protect your online accounts from Users can still login with one of the other registered U2F keys. Additionally, it is possible in Tutanota to register multiple hardware keys. Thus, most services offer a way to reset the login credentials to regain access.įor instance, Tutanota offers a recovery code that must be entered along with the correct password to reset (in this case: remove)Ī lost U2F hardware key. If a hardware key is lost, it will become impossible to login to the services and apps that were originally secured with this Is no option to back up recovery codes of shared secrets. There is one significant disadvantage of U2F solutions in comparison to TOTP (which uses a shared secret): For U2F there Multiple Choices: Access to nearly 1,000 apps and services.Strong Security: No account takeovers when deployed fully.Fast Authentication: Decrease time to authenticate.Instead of entering a certain code (OTP), you just need to plug a deviceĪs second factor. Universal second factor authentication refers to a separate device that holds a secret,Įxtra key required to log into your digital account(s). The security provided by 2FA (two-factor authentication) as no drivers or client software is needed. U2F is an open authentication standard that uses one key for multiple services. What is FIDO U2F (Universal 2nd Factor)? - Definition To impossible for malicious attackers to take over your mailbox. If activated on your email account, for instance at Tutanota, it will be close Services like Amazon, Twitter, PayPal and othersĪre linked to your email account, and passwords to these services can be easily reset if a malicious attacker has In fact, U2F is so important that every email service should support it.
Tl dr: U2F is important as it is the most secure option to protect your accounts.
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