How do we ensure that the information we're using is accurate?

Is there anything that authentication can do for us? In this part, we'll look at the advantages and disadvantages of various types of authentication.

How does secret key cryptography function? Please provide a short explanation, maybe with an illustration of how the system used to work. What recent experiences do you have with it?

Let's imagine you're asked to validate a new password you just received from the company's email server. However, you haven't changed the password. How did you modify the secret question? In what ways might an attacker have gained access to the necessary information to alter the password?