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Protecting you

Peace of mind:

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Built-in protection with your Mastercard

Experience an array of security features to help protect you and your payments.

Protection wherever you shop

With Mastercard Zero Liability protection you’re protected against unauthorized transactions in stores, online and in app.1

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Global Emergency Services

Call 1-800-307-7309 for 24/7 assistance to report a lost or stolen card.2

Payment Passkeys

Unlock your key to a more secure checkout.

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Accelerating card fraud detection

Mastercard is using generative AI to double the speed we can detect compromised cards.

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Click to Pay

Experience a faster, more secure way to pay online and never have to remember passwords.

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Peace of mind with worldwide acceptance

Use your Mastercard safely at approximately 150 million locations and over 250 million digital access points.

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Frequently asked questions

If you believe a transaction posted to your account is fraudulent, you should immediately contact the financial institution that issued your card. Look for a customer service number on the back of the card or on your billing statement. You can also contact the Mastercard Assistance Centre toll-free at 1-800-307-7309.

Mastercard appreciates your diligence in protecting your finances. While we take each card breach very seriously and are working closely with investigative agencies, we encourage you to contact your financial institution for the most up-to-date information. Typically, there is a customer service number on the back of the card that you can call.

Please be advised that Mastercard does not contact individuals to request personal information including account information. If you receive an unsolicited phone call, email, text message or social media request from an individual claiming to be a Mastercard representative: Do not respond. If you have questions or concerns about your account, contact your financial institution directly by calling the number on the back of your card or billing statement.

Find the card that’s right for you

With Mastercard in your wallet, life is full of priceless possibilities.

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Coverage may vary by issuer or country of issuance.

1. Zero Liability does not apply to Mastercard cards issued to an entity other than a natural person; primarily for business, commercial or agricultural purposes; until such time as that person’s identity is registered by or on behalf of the issuer in connection with the issuance and/or use of such card, which registration may include appropriate customer identification program requirements; outside of Canada. ↩

2. Get emergency assistance virtually anytime, anywhere and in any language. Mastercard Global Service helps you with reporting a lost or stolen card, obtaining an emergency card replacement or cash advance, finding an ATM location and answering questions on your account. If outside of Canada, you can call collect using 1-636-722-7111.↩