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Answer :
The method that is not effective in preventing brute-force password guessing attacks via login portals is allowing unlimited login attempts without any restrictions. Effective methods include implementing account lockout policies, using multi-factor authentication, and CAPTCHA or reCAPTCHA challenges. The correct option is (C)
Preventing Brute-Force Password Guessing Attacks
To prevent brute-force password guessing attacks on login portals, there are several effective methods. However, one option that is not effective and should be avoided is allowing unlimited login attempts without any restrictions or security measures. This open policy can lead to compromised accounts as it gives attackers the opportunity to attempt password guesses indefinitely.
- Implementing account lockout policies after a certain number of failed login attempts is an effective security measure that can deter brute-force attacks by temporarily locking the account after multiple incorrect attempts.
- Using multi-factor authentication (MFA) significantly increases account security, as it requires additional verification beyond just the password, making it harder for unauthorized access even if the password is compromised.
- Implementing CAPTCHA or reCAPTCHA challenges is another practical approach to differentiate between human users and automated bots, reducing the risk of brute-force attacks.
It is crucial to practice good password security by using long, complex passwords and avoiding reuse across multiple accounts to further strengthen protection against attacks.
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