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In collaboration with Sticky Monster Lab, Mastercard brings Safety & Security to life through the Protected Monsters. This playful, vibrant cast is inspired by everyday passions where fraud can hide: shopping, dining, travel, and play. Behind every moment of joy, Mastercard’s multi-layered protection works quietly in the background, keeping every tap, click, and transaction secure.

Do you know?

$425 Billion

estimated loss to card fraud 2023-20321

1 NILSON, Nilson Report Issue 1254, Dec. 2023.

Protect payment

Built-in protection with your Mastercard

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

Mastercard’s 24/7 Network Defense: Always Vigilant. Always Ready. Always Protecting You.

Network-level Protection

Mastercard Safety Net monitors transactions across the entire network to detect and block large-scale or unusual fraud patterns, often before they even reach your bank.

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Transaction-level Monitoring

Decision Intelligence uses AI to assess each transaction in real time. It helps your bank make smarter decisions, approving genuine purchases and stopping suspicious ones so your payments stay smooth and secure.

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Personal Identity Security

Mastercard ID Theft Protection™ offers proactive monitoring, timely alerts, and a self-resolution guide to help you protect your registered personal information. It’s your personal defense against identity threats.

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Protection wherever you shop

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

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Global Emergency Services

Call 1-800-MASTERCARD (+1 800 627 8372) in the U.S. or ++1 636 722 7111 from outside the U.S. for 24/7 assistance to report a lost or stolen card.

With Mastercard’s 24/7 Network Defense, large-scale and coordinated fraud attacks can be identified and mitigated in seconds.

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-Mastercard (+1 800 627 8372) or collect from outside the U.S. at +1 636 722 7111. If you’re in the U.S., you can report scams and suspicious calls, emails, texts and websites to the Federal Trade Commission.

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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Featured resources

Coverage may vary by issuer or country of issuance.

1. Conditions and exceptions apply. Learn more about Zero Liability. ↩