October 18th, 2018 |
Do you run a business that processes credit or debit cards via a shopping cart on your website? If so, you’re likely aware of the increased security risks associated with “card-not-present” (CNP) transactions. In these scenarios, the actual card isn’t physically swiped, which makes them more susceptible to fraud, chargebacks, and data breaches. While there’s no single solution to eliminate all risks, there are proven, practical steps you can take to significantly reduce your vulnerability when accepting credit card payments online. By following secure practices and leveraging modern fraud prevention tools, you can protect your revenue, reputation, and customers’ trust.
Here are 10 reliable, expert-backed strategies that will help secure your website’s shopping cart and protect your business.
Require customers to provide full details at checkout—name, billing and shipping address, phone number, and email. If the billing and shipping addresses don’t match, consider following up with a phone call to verify the order. Be cautious with high-value orders or if the contact information seems inconsistent or unreachable. If doubts persist, it’s better to decline the transaction.
Why it matters: Legitimate customers rarely hesitate to provide verifiable details. Fraudsters, however, often use incomplete or fake data.
Always request and verify the card number, expiration date, and CVV (Card Verification Value). Ensure that your payment gateway includes checks for the CVV and that mismatches trigger an automatic decline. If the card is expired or fails security validation, cancel the transaction.
Insight: These extra fields act as critical fraud-prevention checkpoints, especially in CNP scenarios.
Use your payment gateway or processor to obtain real-time electronic authorization for each transaction. This step verifies the validity of the card and confirms that sufficient funds are available.
Note: Electronic authorizations are necessary to defend against potential chargebacks.
Voice authorizations may have been a fallback method in the past, but today they’re considered unsecure and non-compliant with modern fraud prevention standards. Instead, if the system is down, wait and retry or request another payment method.
Important: Voice authorizations cannot be used as a defense in case of a chargeback and lack traceable verification data.
If a transaction is declined, do not attempt to override the system or “force” the authorization manually. Always request a new payment method from the customer. A forced transaction eliminates protection against fraud and increases chargeback liability.
Use AVS to compare the billing address provided by the customer with the address on file with the issuing bank. AVS mismatches should trigger a manual review or contact attempt. Minor errors (like a misspelled street name) may be innocent, but they must be verified.
Best practice: Configure your AVS settings to flag mismatches but allow flexibility for human review when necessary.
Work with your payment gateway provider to activate fraud prevention tools such as:
Why it’s valuable: These tools provide early detection of bot attacks, account takeover attempts, or card testing fraud.
Include a CAPTCHA or reCAPTCHA verification at checkout to ensure that the person placing the order is a human, not an automated bot.
Note: This is a simple yet powerful defense against automated attacks, credential stuffing, and fraudulent bulk orders.
Ensure your system is configured to batch and settle transactions once per day. Delayed settlement can lead to higher processing fees and customer disputes due to outdated authorization data.
Pro tip: Settle within 24 hours to remain compliant with most payment processor requirements and minimize risk exposure.
If something feels off—such as a customer ordering unusually large quantities, using different billing and shipping addresses, or requesting rushed shipping without prior history—pause and investigate. Legitimate customers understand the need for security verification.
Warning signs:
In today’s evolving digital landscape, relying solely on basic security measures isn’t enough. Here are a few must-have enhancements that modern businesses should implement to fortify online payment security and build lasting customer trust:
This advanced verification step prompts cardholders to authenticate transactions through a password, biometric check, or SMS code. It adds a layer of security and often shifts liability from merchants in cases of fraud-related chargebacks.
Stay up-to-date with Payment Card Industry Data Security Standard (PCI DSS) requirements. This includes using encrypted payment forms, tokenizing sensitive data, and working with certified payment providers to reduce the risk of breaches and fines.
Tokenization replaces sensitive card details with a unique identifier (token), making stolen data useless to hackers. Combined with E2EE, it ensures data is encrypted from the point of entry to the payment processor.
Leverage tools that notify you of unusual transaction behaviour such as:
Being alerted in real-time allows you to act before fraud occurs.
A high volume of disputes can result in penalties or account suspension. Monitor your chargebacks closely and use representment tools to fight fraudulent claims effectively.
In the fast-paced world of online commerce, security is not optional—it’s essential. Every card-not-present transaction comes with an inherent risk, but with the right strategies in place, you can protect your business, minimize fraud, and build lasting trust with your customers.
By implementing the 10 core practices outlined above—along with today’s essential security enhancements like 3D Secure, PCI compliance, encryption, and fraud monitoring—you create a safer, more reliable shopping experience. These measures don’t just reduce chargebacks and losses; they safeguard your brand’s reputation and position your business for long-term growth.