Multi-factor authentication (MFA) in Cybersecurity - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is Multi-factor authentication (MFA)?

Multi-factor authentication (MFA) is a security method that requires users to provide two or more different types of evidence to prove their identity before accessing an account or system.

beginner

Name the three common types of factors used in MFA.

The three common types of factors are: 1) Something you know (like a password), 2) Something you have (like a phone or security token), and 3) Something you are (like a fingerprint or face scan).

beginner

Why is MFA more secure than just using a password?

MFA is more secure because even if someone steals your password, they still need the other factor(s) like your phone or fingerprint to access your account, making unauthorized access much harder.

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Give an example of 'something you have' factor in MFA.

An example of 'something you have' is a smartphone app that generates a one-time code or a physical security key you plug into your computer.

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What is a common real-life situation where MFA is used?

MFA is commonly used when logging into online banking, email accounts, or work systems to add extra protection beyond just a password.

Which of the following is NOT a factor type used in MFA?

A Something you know

B Something you have

C Something you want

D Something you are

The three factor types are something you know, have, or are. 'Something you want' is not a factor type.

Why is MFA important for online security?

A It requires multiple proofs of identity

B It makes passwords longer

C It removes the need for passwords

D It stores your passwords securely

MFA improves security by requiring more than one proof of identity, making unauthorized access harder.

Which of these is an example of 'something you are' in MFA?

A One-time code

B Password

C Security token

D Fingerprint

'Something you are' refers to biometric data like fingerprints or facial recognition.

If someone steals your password but you have MFA enabled, what happens?

A They can access your account easily

B They need another factor to access your account

C They can reset your password immediately

D MFA disables your account

MFA requires additional proof beyond the password, so the thief cannot access the account without the other factor.

Which device is commonly used as 'something you have' in MFA?

A Smartphone app generating codes

B Your memory of a password

C Your voice

D Your email address

A smartphone app that generates one-time codes is a common 'something you have' factor.

Explain what Multi-factor authentication (MFA) is and why it improves security.

Think about how MFA uses more than one way to check who you are.

List and describe the three common types of factors used in MFA with examples.

Consider knowledge, possession, and biometrics.