![]() If Adversary in The Middle is not on your radar, maybe it should be. In this scenario OTP’s cannot protect users. This is called an ‘on-the-fly phishing’ attack. With phishing, the attacker steals both the password and the OTP and can then use them immediately to access its victim's account. It’s true to say that a password plus an OTP is an effective way to prevent brute force attacks – but it doesn't stop phishing. We can’t discuss Google’s new back up and sync feature without talking about phishing. Like anything, it slows the bad guys down, but do OTP codes prevent all password-based attacks? Well, the short answer is definitely no. They cannot access their victim's account with just one element, i.e., the password. ![]() When OTP is used in combination with a memorised password, it certainly does make it more difficult for hackers. OTP codes as an additional factor are slightly more secure than a single method of authentication such as a password used in isolation, and it cannot be ‘replayed’. The idea is that hackers cannot steal them and use them later. An OTP code is like a password in its application, but unlike passwords, OTP’s can only be used once (usually valid for about 30seconds) before they permanently expire. It’s the six-digit code generated on app or a hardware device which is used as an extra step in some multifactor authentication processes. What is an OTP Code?įirst off, let’s talk about OTP. In this article, we discuss the challenges, threats and pit falls of Google’s backup and sync strategy and why it comes with bigger problems. Google joins a list of other MFA providers in adding this feature. The Authenticator app is about 13 years old now and users have been desperate for Google to add a backup and sync feature, which has been at the top of the wish list for some time now, according to many commentators. When a user is ready to authenticate a login, Google Authenticator will provide the user with a six-digit code to prove who they are. It’s an app-based MFA that uses ‘’time-based one-time passwords’ (TOTP), or OTP for short.
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