Relying solely on the mathematical randomness of a 6-digit code is not enough to secure user accounts. Organizations must implement defense-in-depth strategies to make wordlists completely obsolete to attackers:
: Analyzing extracted device firmware to locate hardcoded default pins or backup codes.
The creation or possession of a 6-digit OTP wordlist is . However, how you use it determines legality. Unauthorized brute-forcing of any OTP-protected service violates laws in most jurisdictions:
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Limit OTP validation requests to a maximum of 3 to 5 attempts per user session/IP address before locking the function.