Послуги з імітації атак хакерів для вдосконалення процесів кібербезпеки.
/ BLOG
Do mobile apps need to be tested to ensure compliance with PCI DSS 4.0 requirements?
Developing a mobile application is a crucial step in scaling any e-commerce project, bringing your brand closer to the consumer. However, once you integrate payment features, your app becomes more than just a digital catalog — it starts processing financial data. This milestone in business development is directly linked to compliance with PCI DSS — the primary data security standard for the payment card industry.
These rules exist to keep sensitive financial data safe whenever it is processed, sent, or stored. To verify compliance with these regulations, businesses must pass an audit — a comprehensive assessment of both organizational and technical processes. However, it is not enough for auditors to simply review documentation and server configurations; they need practical evidence that your application can survive a real attack.
This is exactly why penetration testing (pentesting) is required — a controlled, simulated attack performed by ethical hackers. The goal is to identify and fix vulnerabilities before real cybercriminals can exploit them.
Let's find out exactly when your product needs to meet these regulatory requirements.
Why Basic Mobile OS Security Mechanisms Aren't Enough?
Bank terminals operate as closed systems designed to perform only financial operations. A customer's smartphone, however, is an open environment running dozens of different applications at the same time, and any of them might have vulnerabilities. Because your software shares resources with other programs, it simply cannot rely entirely on the device's operating system and requires additional protection.
There is a common misconception that "iOS and Android have built-in security features, and that is enough." While the operating system does protect the execution environment, it does not protect the app's actual code and logic.
Here is why relying only on the phone’s security is risky:
This is exactly why Requirement 6.5 of PCI DSS 4.0 establishes mandatory secure coding practices. Mobile application security is something the development team must build from the inside out.
Why Do Auditors Require Pentest Results to Verify Security?
During a mobile application audit, the specialist looks for evidence that security is built into the core of your product, not just there by chance. They verify whether the company has a systemic approach to security: clear processes, team training, documents, and reports.
According to PCI DSS Requirements 6.3 and 6.5, a company must demonstrate that its developers are writing safe code. This means no hardcoded passwords, controlling the security of third-party SDKs, and preventing cardholder data from leaking into the smartphone's system logs. However, having the right processes and policies is just theory. Auditors need practical evidence that the defenses can withstand a real-world attack.
That’s why Requirement 11.4 makes it mandatory to conduct penetration testing (pentesting) at least once a year, and after any significant product update.
A pentest is a controlled assessment of an application performed by a team of ethical hackers. They act like real cybercriminals, using complex, multi-step scenarios in an attempt to bypass your security.
During the test, pentesters check your app from every angle, relying on recognized industry standards like the OWASP Mobile Top 10. The specialists evaluate:
The deliverable of a pentest is a detailed report that classifies the identified vulnerabilities by severity, explains the real-world impact of each, and provides exact steps to solve them. After receiving this document, the client must fix the identified issues.
Finally, the pentesters perform a retest to confirm that the reported problems can no longer be exploited, documenting the findings in a final report. This document is exactly what PCI DSS auditors want to see — it proves your app can survive a real, targeted attack.
What Are the Risks of Mobile Application Non-Compliance?
Ignoring PCI DSS requirements is a direct threat to business stability. If a payment data leak happens because of an application vulnerability, the company is entirely responsible.
The consequences begin with financial sanctions: international payment networks like Visa and Mastercard reserve the right to issue monthly fines that can amount to tens of thousands of dollars — and these will continue to accrue until the problem is completely fixed.
In the case of a confirmed card data breach, this is compounded by the costs of forensic investigations and compensation for affected customers. In the worst-case scenario, payment networks can pause or permanently ban the company's ability to accept payment cards.
However, the most severe impact is reputational. A public data breach scandal destroys user trust, which is incredibly difficult to rebuild. As a result, you might see customers leaving and a drop in sales — even after you’ve fixed the technical bugs.
IT Specialist Transforms Audits into a Managed, Stress-Free Process
The standard mandates an independent and professional assessment of your infrastructure. Our team of ethical hackers (Red Team) conducts penetration testing in strict accordance with all PCI DSS 4.0 requirements. We identify critical vulnerabilities before cybercriminals can exploit them.
Entrust your audit to the experts at IT Specialist!