Problem Statement
Why is multi-factor authentication (MFA) considered a strong security mechanism?
Explanation
Multi-factor authentication (MFA) strengthens access controls by requiring two or more independent factors: something you know (password or PIN), something you have (token, phone), and something you are (biometric). This reduces the risk of account compromise—even if one factor is stolen or guessed, the attacker still lacks the other factor(s). In many entry-level security roles this is one of the first controls expected to be implemented.
