The article answers the question if a user is able to use the same One-Time-Passcode several times.

• Multi Factor Authentication (MFA)
• Okta Policy
• One Time Passcode (OTP)
• Security

A one-time password or passcode (OTP) is requested when trying to log in to the Organization Unit (OU).

It is NOT possible to receive the same OTP value due to security risk. 

The benefits of receiving unique OTP values are:

• Resistance to replay attacks: OTP authentication provides distinct advantages over using static passwords alone. Unlike traditional passwords, OTPs aren’t vulnerable to replay attacks—where a hacker intercepts a transmission of data (like a user submitting their password), records it, and uses it to gain access to the system or account themselves. When a user gains access to their account using an OTP, the code becomes invalid, and therefore can’t be repurposed by attackers.
• Difficult to guess: OTPs are often generated with algorithms that make use of randomness. This makes it difficult for attackers to successfully guess and use them. OTPs may be valid only for short periods of time, require the user to have knowledge of a previous OTP, or provide the user with a challenge (e.g., “please enter the second and fifth number”). All of these measures further reduce an environment’s attack surface when compared to password-only authentication.
• Reduced risk when passwords are compromised: Users that don’t adopt strong security practices tend to recycle the same credentials across different accounts. If these credentials are leaked or otherwise fall into the wrong hands, stolen data and fraud are significant threats to the user on every front. OTP security helps to prevent access breaches, even if an attacker has obtained a valid set of login credentials.
• Easy adoption: One-time passcodes are also easy for organizations to integrate into their authentication strategies. While the cryptic nature of these codes makes them difficult for people to memorize, phones, tokens, and other technologies are widely accessible for security teams to use and distribute to their employees.