Multi-Factor Authentication (MFA) is an electronic authentication method that requires the user to provide two or more forms of identity verification before they are allowed access to a website, network, or application.   

When implemented correctly, MFA can make it significantly more difficult for an adversary to steal legitimate credentials to facilitate further malicious activities on a network.  

Due to its effectiveness, MFA is one of the Australian Cyber Security Centre (ACSC) Essential Eight Strategies to Mitigate Cyber Security Incidents. 

Further Information: 

Implementing Multi-Factor Authentication | cyber.gov.au 

Back to Basics: What’s multi-factor authentication – and why should I care? | NIST