What countermeasure is recommended to protect against credential-harvesting attacks?

Implementing multifactor authentication is a highly effective countermeasure against credential-harvesting attacks. Credential-harvesting attacks often involve stealing usernames and passwords to gain unauthorized access to user accounts. By requiring multifactor authentication, you add an extra layer of security that goes beyond just having a username and password.

This additional factor typically involves something the user possesses (like a smartphone app or a hardware token) or something inherent to the user (such as a fingerprint or other biometric data). Even if an attacker successfully harvests the user's credentials, they would still be unable to gain access without the second factor of authentication. This significantly reduces the likelihood of unauthorized access and enhances overall security.

In contrast, while password complexity, user training, and regular password changes can contribute to improved security practices, they do not provide the same level of protection against credential-harvesting techniques. Password complexity may make it harder for attackers to guess passwords, but it doesn't prevent theft via phishing. User training helps users recognize potential phishing attempts, but it requires users to be vigilant, which is not always reliable. Regular password changes can be helpful, but they might not be practical in every situation and may not address the underlying issue of credential theft if an account has already been compromised. Thus,