John works as a professional Ethical Hacker. He has been assigned a project to test the security server. Now, he suggests some countermeasures to avoid such brute force attacks on the We- aresecure se

CAPTCHA challenges distinguish human users from automated scripts by requiring a cognitive task that bots cannot reliably solve. Presenting CAPTCHA after a threshold of failed attempts effectively neutralizes brute force and credential-stuffing tools that rely on high-speed automated submission.

Restricting login attempts to three directly defeats brute force attacks by triggering a lockout or enforced delay after the threshold is exceeded. This makes exhaustive trial-and-error attacks impractical because attackers cannot cycle through large password sets against a specific account.

Periodic password changes reduce the window of exposure for a compromised credential but do not prevent or interrupt an active brute force attack against the current password.

Increasing the encryption key length strengthens cryptographic protection of stored or transmitted data but has no effect on an attacker submitting login guesses through a web form.