PCI DSS Application Security

Payment Page Security

Payment Page Security refers to the measures and technologies implemented to guarantee the safety and integrity of a webpage where users input their payment card data during an online transaction.

What is payment security?

Payment security encompasses the systems, processes, and measures that are implemented to safeguard payment card transactions against threats. These threats include unauthorized access, data breaches, and fraud.

In both online and offline transactions, prioritizing payment security is crucial for maintaining customer trust, minimizing financial losses, and a requirement to maintain compliance with relevant regulations and industry standards.

Payment security measures


The payment page must use strong encryption protocols, like TLS (Transport Layer Security), to secure the data transmitted between the user's browser and the server. This encryption ensures that sensitive information, like payment card numbers and personal details, remains confidential and protected from unauthorized access during the data transfer.


If applicable, tokenization may be employed on the payment page. This involves replacing sensitive data (such as payment card numbers) with unique tokens. Even if these tokens are intercepted, they hold no intrinsic value or usable information.


Techniques should be used to ensure the integrity of all JavaScript that executes on a Payment Page, whether the script originates from the merchant or a third-party. To minimize the attack surface, Payment Pages should restrict the amount of JavaScript on a page to the minimum necessary for business purposes.

PCI DSS Compliance

The Payment Card Industry Data Security Standard (PCI DSS) sets security standards for handling payment card information. Payment pages need to comply with these standards to ensure the secure processing, storage, and transmission of payment card data.

Authentication Measures

The payment page may invoke further authentication measures, such as 3D Secure, to verify the identity of the user and protect against unauthorized transactions. It is important to ensure that such authentication can not be intercepted for example by an overlay attack.

Secure Payment Gateway

The payment page typically interacts with a payment gateway, which facilitates the processing of the transaction. The payment gateway itself should be secure, employing encryption, tokenization, and other security measures to protect sensitive data.

Creating a Payment Security Strategy

Creating a strong payment security strategy includes conducting a thorough risk assessment, understanding compliance requirements, formulating security policies and procedures, deploying security measures, overseeing systems, adapting the approach as necessary, and formulating an incident response plan.

Periodic reviews are essential to ensure the effectiveness of the security strategy.

How Jcrambler can help you

See how Jscrambler enhances client-side security.

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