The network was breached over the weekend. System logs indicate that a single user's account was successfully breached after 500 attempts with a dictionary attack. Which of the following would BEST…

The correct answer is B. Account lockout. A dictionary attack works by repeatedly guessing passwords from a list of common words and phrases. Account lockout policies automatically lock an account after a defined number of failed login attempts (e.g., 5–10), rendering brute-force and dictionary attacks ineffective…

Networking

Question

The network was breached over the weekend. System logs indicate that a single user’s account was successfully breached after 500 attempts with a dictionary attack. Which of the following would BEST mitigate this threat?

Options

AEncryption at rest
BAccount lockout
CAutomatic screen lock
DAntivirus

How the community answered

(33 responses)

A
6% (2)
B
79% (26)
C
3% (1)
D
12% (4)

Explanation

A dictionary attack works by repeatedly guessing passwords from a list of common words and phrases. Account lockout policies automatically lock an account after a defined number of failed login attempts (e.g., 5–10), rendering brute-force and dictionary attacks ineffective. Encryption at rest protects stored data but not login credentials. Antivirus and screen lock do not address password-guessing attacks.

Topics

#account lockout#dictionary attack#brute force prevention#password security

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