There is also hardening against MITM attacks, so it is extremely difficult for an attacker to phish you with typosquatting and a Trojan horse lookalike site. There is a secret on the key, and that secret never leaves the key. It uses something called asymmetric cryptography. No six digit numerals, no shared secret with the server. I am not overly fond of using the Yubikey for TOTP, but it's a viable option.įIDO2 is a different beast entirely. Via Yubikey Authenticator, you can use the key to generate the six digit numerals and authenticate. The Yubikey 5 can help you with TOTP by storing up to 32 of these shared secrets. It is unlike a password because nothing you share to authenticate can be used by an eavesdropper to impersonate you. TOTP works via a secret shared between you and the server. Perhaps the central issue is the distinction between TOTP and FIDO2? ![]() I keep hearing it is more secure than authy. Upgrade your 2FA from TOTP to FIDO2 when it is available. As a 2FA method, you haven't removed the requirement for a password (and you shouldn't, even when possible, precisely because of this). Yes, FIDO2 is hardened against man-in-the-middle attacks, so it is superior to TOTP when it is available.Īll the perpetrator needs is to plugin and voila.
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