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H.R. 2881

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Definition: brute force attack

The systematic and exhaustive testing of all possible combinations of keys or passwords that can be used to break a security system. For example, if the username of an account is known, the brute force attack attempts to find the password. In a reverse brute force attack, the password is known and the brute force method tries to find the username. See dictionary attack and password spraying. See also brute force programming.