Quick meaning
Requiring two or more proofs of identity before granting access to an account.
Think of it like this
Like a bank vault that requires both a key and a fingerprint scan.
Where you may see this
You may see this in login screens, warning messages, banking apps, or scam-prevention advice.
Why it matters
Understanding this word helps you protect your money, personal information, and online accounts.
Say it simply
Multi-Factor Authentication (MFA) means: Requiring two or more proofs of identity before granting access to an account.