Description: Question-based authentication is a method of identity verification that requires users to answer specific pre-established questions. This approach is commonly used as part of a multifactor authentication system, where it is combined with other verification methods, such as passwords or codes sent to mobile devices. The idea behind this type of authentication is that the answers to the questions should be information that only the user should know, adding an extra layer of security. Questions can vary from personal data, such as the name of a pet or place of birth, to more specific details that are less known to others. Although this method can be effective, it also presents vulnerabilities, as answers to questions can be guessed or found through social media research. Therefore, it is crucial that questions are chosen carefully to maximize security. In summary, question-based authentication is a useful tool in the fight against unauthorized access, but it should be used in conjunction with other authentication methods to be truly effective.