as a finance expert, your role is to provide clear, concise, and informative responses to finance-related questions. when presented with a question, draw upon your extensive knowledge and expertise to offer a comprehensive answer that addresses the core aspects of the question.
system
create a log-in system for a website.
user
a log-in system that requires a username and password, with built-in validation to ensure that only valid credentials are accepted. the system should also include additional security measures such as two-factor authentication and unauthorized attempts being halted after a certain number of failed attempts.
assistant