NAB Security FAQs



What security measures has NAB put in place?

Security for communications and transactions over the Internet is important for both NAB and our customers, and we'd like to let you know that the NAB Internet Banking security system has been selected by our data security experts following extensive research.

To help deliver secure Internet Banking services, NAB has implemented a solution that seeks to provide robust authentication and privacy.

NAB uses TLS (Transport Layer Security) encryption technology to protect your information. To ensure compatibility with our site, please keep your browser up to date.

In addition to our sophisticated cryptographic implementation, robust firewall technology is employed to help to protect NAB's internal systems and customer's information against intrusion from the Internet.

For greater security NAB Internet Banking has the facility to allow you to voluntarily lock your password when logging out from the application. NAB Internet Banking cannot be accessed again until your Internet Banking password is unlocked. To unlock your Internet Banking Password you need to call 1300 651 656 and enter your Telephone Banking Password when prompted.

We also have a special security software offer for all NAB customers. Visit for more information.

NAB has introduced these measures to help provide a secure environment for you to complete your banking. Find out more.

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How does NAB make sure that only I can access my accounts?

You must enter a NAB ID and Internet Banking Password every time you access the system. The password is known ONLY to you.

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What can I do to maximise security?

  • Keep your password secret.
  • Never leave your computer unattended while logged on to NAB Internet Banking.
  • Don't use your date of birth, telephone number, address, your name or the name of a friend or relative in your password.
  • Change your password regularly.
  • Don't use a password you use for anything else (eg. your answering service).
  • Ensure that you use Virus Detection Software to protect your computer from Trojan viruses. Visit for more information.
  • Ensure that you are not observed or heard entering you password (eg. screen reader software voices data entry and screen text to assist visually impaired users).
  • Lock your password when you logout from NAB Internet Banking.

What do I do if I notice an unauthorised transaction has gone through my account?

If you believe you Internet Banking information has been compromised or you notice a transaction you did not initiate, you must contact the Internet Banking Support Team immediately on 1300 651 656. The support hours are located on our Contact us page.

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Where can I find more information about my responsibilities when using NAB Internet Banking?

This information is detailed within the NAB Internet Banking Terms and Conditions of use. Find out more.

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What do I do if I have made an error with a payment?

If you believe you have made an error with a payment you have submitted, contact the Internet Banking Support Team immediately on 1300 651 656. The support hours are located on our Contact us page.

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What happens if NAB detects a suspicious transaction?

If a suspicious transaction is detected, one of our operators will investigate to confirm that the transaction is authorised. This may involve phoning the customer to confirm that the transaction was initiated by the correct person.

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Why have you introduced Password lock?

The ability to lock your Internet Banking password has been introduced to provide security aware customers with a tool which offers peace of mind when banking with NAB. Password lock now provides customers with control over the level of protection they wish to adopt.

This feature is ideal for people banking in environments that are outside of their control (e.g. Internet Cafes).

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How does locking my password offer me more protection?

Password lock offers you the option of using multiple passwords to access Internet Banking (Telephone Banking and Internet Banking).

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Do I have to lock my password each time I logout from Internet Banking?

No, using the password lock function is optional.

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How do I unlock my password?

To unlock your Internet Banking password, you must phone 1300 651 656 and enter your NAB ID and Telephone Banking password when prompted.

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