What causes events on a Windows system to show Event Code 4625 in the log messages?
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A. B. C. D.B.
Event Code 4625 in the log messages on a Windows system indicates that an attempted login has failed. Specifically, it means that the Windows Security log detected a failed logon attempt, typically due to an incorrect username or password.
This event is generated when an account failed to log on, usually due to a bad password or a locked out user account. This event is also commonly seen when an attacker is attempting to gain access to a system by guessing passwords or using automated tools to perform a brute force attack.
The information logged with this event code includes the username that was used in the attempted login, the source IP address of the client that attempted the login, and the reason for the failed login attempt. The reason for the failed login attempt can provide insight into the type of attack being attempted. For example, if the reason is "unknown user name or bad password," it suggests that an attacker is attempting a brute force attack by guessing usernames and passwords.
Therefore, the correct answer to this question is B: Someone is trying a brute force attack on the network.