Послуги з імітації атак хакерів для вдосконалення процесів кібербезпеки.
/ BLOG
Payment service pentesting is a systematic approach to protecting transactions from threats
Online payment methods are rapidly gaining popularity and becoming a mandatory feature of online shopping. As payment gateways grow and improve, the risks of fraud in this area are also increasing. Therefore, it is important not only to respond quickly to potential threats, but also to implement measures to prevent them. In this article, we’ll look at how security testing can help online businesses minimise the many risks associated with fraudulent transactions.
Our approach to pentesting: standards and methodologies
We test payment services based on the best practices and standards recommended by NIST, OSSTMM, and OWASP projects, such as Top 10, ASVS, and WSTG. This allows us to follow a methodical approach that covers all key security aspects and ensures compliance with best practices.
We pay special attention to grey box testing. This means that we have limited information about a system, but enough to understand how it works and what the risks are. This approach combines the benefits of limited information (as in the case of black box) with a deep understanding of the system that provides access to some data (as in white box).
Actions performed during the pentesting process
Collection of information: At this stage, we collect information about a payment service, including public sources, documentation, and data obtained during grey box operations. This helps to identify potential entry points for attacks.
Architecture and configuration analysis: We analyse the system architecture, including its components, integrations and security configurations. This allows us to find potential weaknesses in the implemented logic, service architecture, and settings.
Authentication and authorisation testing: During this step, we check how securely the user authentication and authorisation mechanisms are implemented, including assessing possible attacks, such as brute force, account hijacking, and insufficient access control.
API testing: All available API functions are tested, including the detection of hidden or undocumented endpoints. This check can identify vulnerabilities such as injections, insufficient authentication, insufficient data verification and validation, or access control issues.
Analysis of business process logic: Verification of the logic of payment transactions, including the processing of amounts, refunds, and the possibility of data manipulation during operations. It’s important to ensure that all business processes are protected from malicious activity.
Testing for OWASP Top 10 vulnerabilities: The system is scanned for vulnerabilities included in the OWASP Top 10 list, including injections, XSS, session security vulnerabilities, and other common issues.
Integration testing: The interaction of the payment service with other services and payment gateways is checked to identify potential problems at the integration level that could become an attack vector.
Reporting: Upon completion of the test, a detailed report is prepared that includes a description of the vulnerabilities found, their criticality, and recommendations for remediation. This allows service owners to take measures to improve security.
API and service logic testing
One of the key aspects of our approach is testing all possible API functions. Payment services usually use a lot of API integrations, and we strive to identify not only standard, but also hidden features that can become potential attack vectors. Often, hidden APIs are less secure or undocumented, which makes them particularly vulnerable.