Why is anti-virus software important?

Anti-virus software is designed to identify and remove malicious software (or ‘malware’) from a computer.

Malware is software that has been created to reduce the security of your computer. Malware can:

  • cause your computer to stop working correctly
  • perform tasks without you knowing
  • allow other people to access your computer - giving them access to your information and online accounts.

We strongly recommend that all computers and devices have up-to-date anti-virus software. You can set your anti-virus to update automatically to protect your device from new threats.

More information about malicious software can be found on our security home page.

IMPORTANT: If you believe your computer is infected with malicious software, call us on 13 22 65 or visit your local branch immediately.

Anti-virus offers for our customers

If you’re a NAB customer, you can take advantage of the below anti-virus offers from three leading providers.

Free anti-virus software for Microsoft Windows users

Windows 10

Windows 10 has built-in protection with Windows Defender Antivirus, opens in new window.

Older versions of Windows

If you’re looking to protect a personal computer running an older version of Windows, like Windows 7, you can download Microsoft Security Essentials, opens in new window for free, real-time, comprehensive malware protection.

In order to best protect your computer from malware, Microsoft recommends keeping your operating system up to date, opens in new window.

Webroot six-month free trial

After the trial, there’s an option to purchase the software at a discounted rate.

Webroot SecureAnywhere

Download the Webroot SecureAnywhere AntiVirus trial, opens in new window

  • Downloads in seconds and scans in under 2 minutes.
  • Extremely lightweight, will not slow down your PC.
  • Automatically protects your personal and financial information.
  • Fully compatible with other AV software.


For further information about how to protect your computer, please visit basic computer security or the Australian Cyber Security Centre, opens in new window .

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