5/2/2023 0 Comments Google authenticator pcIf you log in with one of those codes, you’ll have to go through the whole registration process all over again. But services often offer reserve codes instead of requiring you to save the secret. You’ll also have to take extra steps to back up the secret. However, this old app-it was released in 2010-does have some security vulnerabilities and inconveniences.įirst, you have to manually input the code at logging in, adding another step to the log-in process. Info: Google Authenticator is easy to use, which is a welcome attribute in the often-convoluted cryptocurrency world. Since both you and the site you’re trying to log on to possess the secret and make the request at the same time (that is, you use the same input factors), you’ll both generate the same hash. So how does the server know how to let you in? It generates the same code you have so it can cross-check your code. To complete your website login, you must enter this code manually on the site before it expires. When you log into a website, your device generates a code based on the current time and the shared secret. Google Authenticator verifies that you are who you say you are based on a secret you and the provider share online. The hacker would need your physical phone to get the code. This means that the code cannot be intercepted remotely by hackign your sim card. How Does Google Authenticator Work?Īuthenticator apps work much the same way as SMS 2FA does, but use an app on your phone to send you the code instead of sending over a text message. Just ask anyone who has ever been the victim of a sim-swapping attack.Ĭertainly, time based one time password apps like Google Authenticator are far more secure than SMS. Warning: SMS one-time passwords are widely known to be unreliable. The other type, which will be discussed later in the article, is Universal Second Factor (U2F).Īnd…there are two kinds of one-time-passwords: The most common type, the Time-based One-time Password (TOTP), is epitomized by Google Authenticator, the grandfather of all 2FA apps.
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