Brute-Force Attack
A brute-force attack repeatedly guesses credentials or secrets until a valid value is found.
Mechanism
An attacker automates many authentication attempts against an account, service, or protected resource. Defensive analysis focuses on rate, distribution, source reputation, and successful attempts after failures.
Indicators to watch
High failed-login rates, repeated attempts against one or many accounts, distributed source addresses, lockouts, and successful logins following bursts of failures.
Concept diagram
Defensive controls
Use MFA, rate limiting, progressive delays, account protection, password policies, breached-password screening, bot detection, and centralized authentication monitoring.
Recommended security control
SIEM correlation + identity protection
Use synthetic accounts in a lab; do not perform credential guessing against real accounts.
Defense tool
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All attack descriptions are for defensive education. Test scanning, traffic generation, interception, wireless testing, and vulnerable applications only on systems and networks you own or are explicitly authorized to assess.