If you only have time for one online security improvement this week, make it multi-factor authentication, usually shortened to MFA.
What it is
The Australian Signals Directorate's cyber.gov.au describes MFA as a security measure that requires two or more proofs of identity before you can get into an account. It calls MFA one of the most effective ways to protect your accounts against unauthorised access.
How it works
MFA combines things like something you know (a PIN or password), something you have (a card, token or phone) and something you are (a fingerprint or other biometric). Even if a criminal steals one of these, such as your password, they still need the others.
Your options
Common methods include a physical security key, biometrics, an authenticator app, a passkey and SMS codes. Any of them is better than a password alone.
Where to start
Your main email account, since it can be used to reset everything else.
Banking and payment apps.
Social media accounts, especially any you use for work or a business.
Cloud storage where you keep documents and photos.
Most services have MFA in their security or account settings. cyber.gov.au has step-by-step guides for turning it on for many popular services.
About the author
RullikClear, sourced explainers on Australia and the world
Rullik is the pen name of the founder of Australia Illuminate (Auslume). Rullik writes plain-language explainers on life in Australia, from immigration, study and work to money, sport and screen culture, always linking to the official sources behind each story. Every story is reviewed before publication.
More from Rullik ↗This article was prepared with AI assistance.
