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Which of the following would BEST deter an attacker try…

Which of the following would BEST deter an attacker trying to brute force 4-digit PIN numbers to access an
account at a bank teller machine?

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A.
Account expiration settings

B.
Complexity of PIN

C.
Account lockout settings

D.
PIN history requirements

Explanation:
Account lockout settings determine the number of failed login attempts before the account gets locked and how
long the account will be locked out for. For example, an account can be configured to lock if three incorrect
passwords (or in this case PIN’s) are entered. The account can then be configured to automatically unlock after
a period of time or stay locked until someone manually unlocks it.

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