Protecting your account & cards

Control your security settings

The CommBank app and NetBank have a range of security features to keep you in control. You can: 

  • Change your card PINs instantly
  • Lock your card temporarily if it’s lost or stolen
  • Lock in-store or online international transactions

Explore Lock, Block, Limit for credit cards and Lock, Block, Alert for debit cards

Keep a close eye on your account

Turn Transaction Notifications on and we'll instantly alert you when a transaction is made on your CommBank debit or credit card. It's also important to regularly check your transaction history in NetBank or the CommBank app.

If you spot anything unusual, call us on 13 2221 at any time. 

Register for NetCode

For an added layer of security, register for NetCode so we can send you an SMS or push notification with a time-sensitive password, when you need to complete certain transactions. It’s an extra step to ensure you’re in control of what’s happening with your account.  

Register now

Update your payment limits

Review your transfer, BPAY and International money transfer limits, to make sure they are suitable for your needs. If you don’t need to make any large transfers or payments, consider reducing them.

Find out how

Keep your account details safe

If you need to be paid by someone you don’t know, consider using Pay ID. Once registered, you can receive payments without needing to share personal information such as your BSB or account details.

Explore PayID

Update your contact details

We have advanced security and fraud detection systems in place, monitoring your account 24/7. If we notice any suspicious activity on your account, we’ll contact you.

Update your details now 

Women in shop

Debit & credit card security

Security tips for using your credit or debit card when paying in-store, shopping online and travelling. 

Tell me more

Hand holding mobile phone

Password security

Setting a strong, unique password and changing it regularly is key to keeping your accounts safe. 

Tell me more

Woman on laptop

How to spot a hoax or scam

From strange looking emails and text messages, to suspicious phone calls.

Report a scam

Staying safe online

Avoid public Wi-fi

Public Wi-Fi isn’t always safe and may enable cybercriminals to access your information. If you need to use public Wi-Fi, avoid online banking or online shopping when using networks you aren’t familiar with. Also switch off ‘auto-connects’, so you’re always in control of your Wi-Fi connections. 

Protect social media and email accounts

Think twice before sharing sensitive personal information on your social media accounts. Hackers and cybercriminals often look to social media for personal information that can be used to aid identity theft and fraud. Ensure you aren’t sharing personal data online, including your address, birthdate, family information and even pet names.

And remember to use different passwords for each of your accounts, change them regularly and enable two-factor authentication. 

Use anti-virus software

Ensure you have the right level of protection for your laptop and computers. Anti-virus software protects against viruses, spyware, malware, phishing attacks, spam attacks and other online cyber threats. Keep your anti-virus software up-to-date and check regularly that it still meets your needs. 

Watch our free online security webinars

To help you understand some of the ways you can protect yourself online, we’ve arranged for a CommBank online security professional to provide you with some tips via an online seminar.

Webinar 1: Protection against scams and fraud

Webinar 2: How to shop safely online

Webinar 3: Creating strong passwords

Practise your online banking skills in a safe environment

Visit to access a free online course that teaches you how to perform common banking tasks securely from home.

Need help?

If you're worried about the security of your account or information, we can help: 

Important information

As the advice on this website has been prepared without considering your objectives, financial situation or needs, you should, before acting on the advice, consider its appropriateness to your circumstances. View our Financial Services Guide. Terms and Conditions for these products and services are available online or from any branch of the Commonwealth Bank. The Terms and Conditions should be considered before making any decision about these products.