Can you explain the difference between two-factor authentication and single-factor authentication?
Two-factor authentication (2FA) is a method of confirming a user's identity by using something they know (e.g., a password) in combination with something they have (e.g., a mobile device). 2FA typically involves an additional step, such as entering a code sent via SMS or email, that must be completed before gaining access to an account. Single factor authentication (SFA), on the other hand, relies solely on one piece of information, such as a username and password, for authorization. SFA does not provide any further security beyond what is provided by the password itself.