How secure is the Airpoints Debit Mastercard?

Your cards are protected by Westpac CardGuard™. Your Airpoints™ Debit Mastercard®, and mobile payments are protected 24/7 from fraudulent activity and unauthorised transactions. All Mastercards at Westpac also come with encrypted EMV chips. The EMV chips make it harder for criminals to read the card's data and allow your card to be deactivated if it's lost or stolen.