An authenticator application generates time-based one-time passwords (TOTPs) or push notifications that serve as a second layer of security when logging into accounts. This method ensures that even if a password is compromised, unauthorized access is still prevented unless the verification code is also available.
Other options like SMS or email may not be as secure due to potential interception.
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What is an authenticator application?
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How do time-based one-time passwords (TOTPs) work?
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What are the advantages of using an authenticator app over SMS or email verification?