Payment processing security is no longer just about securing the back-end of the transaction. In 2026, the payment system must secure every stage of the transaction – from the point of purchase to stored data to the authentication of both customers and employees, and every stage in between. PCI SSC’s 2025 recommendations for ecommerce specifically address the security of payment pages and concerns about e-skimming for online merchants, while EMVCo continues to promote its EMV 3-D Secure protocol as a means of reducing fraud for card-not-present transactions.
Furthermore, a secure merchant account is much more than one with fraud detection filters in place. Instead, the account should be established in a way that minimizes fraud and merchant, gateway, and processor-related disputes, as well as those during the checkout process itself. The goal is not to eliminate fraud altogether (which is impossible), but to establish a merchant services system that minimizes risk for merchants while maintaining an acceptable level of transactions and avoiding an overwhelming operational burden.
What Secure Payment Processing Actually Means
Secure payment processing means providing protection at multiple layers of the payment process, not just one. The resources from both the PCI SSC and EMVCo address the protection of payment data and payment pages. Both organizations provide recommendations to help merchants ensure their payment systems are secure and that transaction decisions made during processing are safe.
Beyond the fraud solutions commonly implemented by merchants, both Visa and NIST provide information on how securing transactions also relates to securing the identities of the individuals performing them. Visa provides recommendations for tokenizing payment data, and NIST details authentication methods that are more secure than those currently in place and less likely to be compromised by phishing attacks, both of which affect the identities of user and admin accounts. Thus, secure payment processing relates not only to checkout security but also to identity and operational security.
Why Merchants Still Lose Money To Fraud
Fraud loss is not limited to data theft. Account takeover, scripted purchases, repeated purchase attempts, and friendly fraud cost merchants money. The PCI SSC’s guidance on e-skimming and EMVCo’s guidance on authentication indicate why authentication and the integrity of the payment page are important elements of the merchant’s security system.
Merchants often focus on only one element of security: either optimizing for approval rate or minimizing fraud. The use of network tokens by Visa and Mastercard’s advice codes aims to improve the payment process for merchants, minimizing transaction failures. Security should improve transaction quality rather than merely increase the number of transactions.
Who Needs This
If you have card-not-present orders or store cards for later use, then you might want to take a closer look at this document if you are:
- An ecommerce business
- A subscription business
- A SaaS company
- A marketplace or platform
- A digital goods business
- An online business with higher risks
- A business with account logins and customer wallets
- A business with multiple staff members
Even if your business has very low rates of fraudulent payments, you should still read this information if you use embedded checkout pages or have staff members with access to your customer wallets.
Key Security Layers Every Merchant Should Have
| Security Layer | What It Protects | What Merchants Should Watch |
|---|---|---|
| Payment-page security | Checkout forms, scripts, and browser-side data exposure | Script authorization, integrity checks, tamper monitoring |
| Authentication | Whether the customer or user is legitimate | EMV 3DS, MFA, phishing-resistant login methods |
| Tokenization | Stored payment credentials and reused card data | Network token support, lifecycle updates, reduced PAN exposure |
| Decline and retry controls | Repeated failed authorizations and avoidable fraud pressure | Retry logic, reason handling, advice-code support |
| Staff access controls | Internal misuse or compromised admin accounts | MFA, passkeys, access segmentation, auditability |
| Dispute operations | Fraud claims, friendly fraud, and post-transaction loss | Order evidence, descriptors, service records, refund handling |
This table shows that payment processing security is not one product category. Merchants need several layers working together, and weak performance in one layer can erase gains from another.
Common Mistakes Merchants Make
The most common mistake is treating fraud prevention as a point solution. Merchants often invest in one solution but leave other aspects of the business vulnerable to fraud. The recommendations from PCI SSC and EMVCo point in the opposite direction.
Another common mistake is focusing on optimizing the payment approval rate. Merchants ignore the importance of credential security and account protection. However, the Visa recommendations and the advice codes point to the same solution.
How Merchants Can Prevent Fraud
Secure Checkout Architecture
For online merchants, the compliance of the processor is not the most important factor in assessing whether their website is PCI compliant. The most important factor is the security of their own website’s checkout page. A secure merchant account should be paired with a checkout architecture that the merchant can control.
Strong Authentication
Authentication methods should range in strength based on the level of risk associated with a specific user action. Both EMV 3-D Secure and phishing-resistant authentication methods as recommended by NIST can help prevent fraud in ecommerce channels while also creating a pleasant user experience. Stronger authentication steps can be required during more sensitive actions on the website, rather than all actions.
Tokenization And Stored Credentials
While convenient to have customers enter their payment details every time they make a purchase, storing such credentials poses security risks for merchants. The use of network tokens can reduce the amount of cardholder data that merchants must store, as well as reduce fraud and improve the customer experience, according to Visa. These factors all play into creating a more secure merchant payment processing setup.
Smarter Decline And Retry Controls
EMV’s advice on the use of Merchant Advice Codes allows merchants to understand the reasons behind declined transactions and whether they should be retried. This is an essential part of a fraud prevention strategy, as merchants do not want to waste money on retrying transactions that will also fail.
Chargeback And Order Review Operations
Even the best fraud prevention methods will result in some chargebacks. Merchants must have appropriate systems in place for reviewing orders, providing service to customers, and providing refunds in a way that minimizes chargebacks. These processes are part of secure merchant services and should be evaluated by merchants to ensure that they are working as effectively as possible.
How to Secure Staff Access and Merchant Accounts
Regardless of how secure the checkout process of a merchant’s website is, if staff does not have secure access to the merchant accounts, those staff members can expose the merchant to significant risk. NIST’s recommendations for improved, phishing-resistant authentication can be applied to staff access controls to merchant websites. Otherwise, even the most secure merchant website can pose risk to the business due to insufficient internal controls.
FAQs
Q: What is secure payment processing?
A: Secure payment processing means protecting the data and systems involved in processing payments. This includes the security of the payment page, authentication processes, tokenization, retries, and merchant access controls—to name a few components—rather than relying on a single fraud solution.
Q: What makes a secure merchant account different from a normal merchant account?
A: There’s no such thing as a secure merchant account category. However, there is a difference between the security of a merchant account that includes secure checkout and fraud operations versus one that doesn’t.
Q: Do secure merchant services reduce fraud on their own?
A: No. Secure merchant services can reduce fraud and disputes when implemented properly across all stages of the merchant operations process.
Q: How does EMV 3-D Secure help prevent fraud?
A: According to EMVCo, EMV 3-D Secure helps to prevent fraud across ecommerce channels by allowing for the exchange of additional data between the parties involved in the transaction. For merchants, this usually translates to additional protection for higher-risk transactions.
Q: Why does tokenization matter for secure payment processing?
A: Because it protects the stored credentials of merchants. According to Visa, tokenization can protect cardholder data, reduce card-not-present fraud, and enhance the customer experience—elements essential to secure payment processing and billing.
Q: What are the first steps to secure payment processing?
A: The areas that expose merchants to the most fraud—typically, issues related to the security of the payment page, stored credentials, administrative access, and authentication around merchant operations. These are the highest priorities for merchants over adding another static rule to a process that is otherwise vulnerable at every stage of the transaction.
Conclusion
The best strategy to prevent fraud in the payment processing industry features multiple essential elements: securing the checkout page, improving authentication, tokenizing payment data, improving the handling of payment retries, and securing staff access.
If you want help finding the best secure merchant services or determining whether your current merchant services are creating avoidable fraud issues, the Payment Nerds can help you compare and find the best payment processing solution for your business. Our goal is not just to create the best merchant account for your business, but to ensure your payments remain secure as your business grows.
Sources
- PCI Security Standards Council. “Payment Page Security and Preventing E-Skimming.” Accessed March 2026.
- EMVCo. “EMV 3-D Secure.” Accessed March 2026.
- Visa. “Visa Token Service.” Accessed March 2026.
- NIST. “Digital Identity Guidelines, Revision 4.” Accessed March 2026.
- Braintree. “Merchant Advice Codes.” Accessed March 2026.
