SecurityTable-stakes
MFA
Also written as Multi-Factor Authentication, 2FA, Two-Factor Authentication
Requiring more than one form of proof to log in (e.g. a password plus a code from your phone), so a stolen password alone isn't enough to break in.
Think of it like
Like a bank vault needing both a key and a combination — having just one doesn't get you in.
Junior or senior?
Junior sounds like
Says MFA is 'more secure' with no further detail.
Senior sounds like
Can name a specific weakness of SMS-based MFA compared to an authenticator app or hardware key.
Ask them
“What's a weakness of SMS-based MFA specifically, compared to an authenticator app or hardware key?”