Top 10 SOAP API Security Testing Service Providers in United States
APIs (Application Programming Interfaces) are the backbone of modern software architecture. Among the various API types, SOAP (Simple Object Access Protocol) remains a prevalent choice, especially in enterprise environments that require robust security and standardized communication.
However, SOAP APIs are susceptible to a range of security vulnerabilities, making thorough security testing paramount. This article highlights the top 10 SOAP API security testing service providers in the United States, offering valuable insights into their expertise, methodologies, and services.
- List of Top 10 SOAP API Security Testing Service Providers in the United States
- Factors to Consider When Choosing a SOAP API Security Testing Service Provider
- Summary: Top 10 SOAP API Security Testing Service Providers in the United States
- Conclusion
- FAQs
- 1. What exactly is SOAP API security testing and why is it important?
- 2. What are some common vulnerabilities found in SOAP APIs?
- 3. How does SOAP API security testing differ from web application security testing?
- 4. What is WSDL (Web Services Description Language) and how is it related to SOAP API security testing?
- 5. What is WS-Security and how does it impact SOAP API security testing?
List of Top 10 SOAP API Security Testing Service Providers in the United States

1. CyberSapiens
CyberSapiens is the best and leading SOAP API Security Testing Service Provider. Our API services are designed to safeguard your Application against potential threats and vulnerabilities caused by affected API’s
We provide a customized API Audit that helps identify all the hidden vulnerabilities that others might miss
How do CyberSapiens conduct API Security Testing Service?
1. Scope Definition
Define the scope of the assessment, including which APIs will be tested, the testing environment, and specific objectives.
2. Reconnaissance
Gather information about the APIs, such as endpoints, protocols, and communication methods.
3. Threat Modeling
Identify potential threats and vulnerabilities that could affect the APIs and their users.
4. Authentication Testing
Evaluate the strength of authentication mechanisms in place to prevent unauthorized access.
5. Authorization Testing
Assess the effectiveness of authorization controls, ensuring that users can access only the appropriate data and functions.
6. Data Encryption Testing
Verify that data transmitted and stored by the APIs is properly encrypted to protect sensitive information.
7. Session Management Testing
Examine how sessions are managed to prevent session hijacking and fixation.
8. Input Validation Testing
Check for input validation flaws that could lead to injection attacks, such as SQL injection or Cross-Site Scripting (XSS).
9. Error Handling Testing
Evaluate how the APIs handle errors and exceptions to prevent data leakage or system exposure.
10. Reporting
Compile and present the assessment findings, including identified vulnerabilities, their severity, and recommendations for remediation.
2. Coalfire
Coalfire is a well-established cybersecurity firm offering a wide range of services, including comprehensive API security testing. They have a strong reputation for compliance-focused security assessments.
3. Veracode
Veracode is a leading provider of application security testing solutions. Their platform offers static analysis, dynamic analysis, and software composition analysis to identify vulnerabilities in SOAP APIs.
4. Rapid7
Rapid7 is a well-known cybersecurity company that provides a range of security solutions, including API security testing. They are recognized for their vulnerability management platform, InsightVM, and their penetration testing services.
5. Synopsys (formerly Black Duck)
Synopsys is a major player in the application security testing market. They offer a range of tools and services, including static analysis, dynamic analysis, and interactive application security testing (IAST) to identify vulnerabilities in SOAP APIs.
6. Trustwave
Trustwave is a global cybersecurity firm that provides a wide range of services, including API security testing. They have a strong focus on managed security services and compliance.
7. ImmuniWeb
ImmuniWeb is an AI-powered application security testing company. They offer a range of services, including API security testing, vulnerability scanning, and penetration testing.
8. NCC Group
NCC Group is a global cybersecurity firm that provides a wide range of services, including API security testing. They have a strong reputation for their research and expertise in emerging security threats.
9. Cure53
Cure53 is a German cybersecurity firm that specializes in web application security testing. They are known for their rigorous testing methodologies and their focus on finding critical vulnerabilities. While based in Germany, they serve clients globally, including in the US.
10. Bugcrowd
Bugcrowd offers a crowdsourced security testing platform that connects organizations with a global network of security researchers. This approach can provide a diverse range of perspectives and help identify vulnerabilities that might be missed by traditional testing methods.
Factors to Consider When Choosing a SOAP API Security Testing Service Provider

Before diving into the list, let’s outline the key factors to consider when selecting a SOAP API security testing service provider:
1. Expertise
Proven experience in testing SOAP APIs and a deep understanding of related security standards (e.g., WS-Security).
2. Methodology
A comprehensive testing approach that covers various vulnerability types and attack vectors.
3. Tools and Technologies
Utilization of industry-leading security testing tools and frameworks.
4. Reporting and Remediation
Clear, concise reports with actionable recommendations for fixing vulnerabilities.
5. Compliance
Adherence to relevant industry regulations and standards (e.g., HIPAA, PCI DSS).
Summary: Top 10 SOAP API Security Testing Service Providers in the United States
- CyberSapiens
- Coalfire
- Veracode
- Rapid7
- Synopsys (formerly Black Duck
- Trustwave
- ImmuniWeb
- NCC Group
- Cure53
- Bugcrowd
Conclusion
Securing SOAP APIs is essential for protecting sensitive data and ensuring the reliable operation of critical systems. By partnering with a reputable SOAP API security testing service provider, organizations can proactively identify and mitigate vulnerabilities, reduce their risk exposure, and maintain a strong security posture.
The providers listed above represent some of the top options in the United States, each offering a unique set of expertise, methodologies, and services to meet diverse security needs. When selecting a provider, carefully consider your organization’s specific requirements, budget, and risk tolerance to make an informed decision.
Remember to prioritize expertise, a comprehensive testing methodology, clear reporting, and a strong commitment to security best practices.
FAQs
1. What exactly is SOAP API security testing and why is it important?
SOAP API security testing is a specialized process focused on identifying vulnerabilities and weaknesses within SOAP (Simple Object Access Protocol) APIs that could be exploited by malicious actors. It’s important because SOAP APIs often handle sensitive data and critical business logic. If they’re not properly secured, it can lead to data breaches, financial losses, and reputational damage for an organization.
2. What are some common vulnerabilities found in SOAP APIs?
Common SOAP API vulnerabilities include XML injection (where malicious XML code is inserted), SOAP action spoofing (manipulating the SOAP Action header), denial-of-service (DoS) attacks, cross-site scripting (XSS) vulnerabilities in responses, SQL injection through the API, and flaws in authentication and authorization mechanisms.
3. How does SOAP API security testing differ from web application security testing?
While there’s some overlap, SOAP API security testing is more focused on the specific protocols and structures used by SOAP APIs. Web application testing covers a broader range of vulnerabilities related to web interfaces. SOAP API testing requires a deeper understanding of XML, WSDL (Web Services Description Language), and WS-Security standards.
4. What is WSDL (Web Services Description Language) and how is it related to SOAP API security testing?
WSDL is an XML-based language used to describe the functionality offered by a SOAP API. It defines the operations, parameters, and data types used by the API. During security testing, the WSDL file is analyzed to understand the API’s structure and identify potential attack vectors. For instance, it helps in understanding the expected data formats, which is crucial for fuzzing and injection attack testing.
5. What is WS-Security and how does it impact SOAP API security testing?
WS-Security is a set of specifications for securing web services, including SOAP APIs. It defines standards for authentication, authorization, encryption, and digital signatures. During security testing, it’s essential to verify that WS-Security is properly implemented and configured to protect the API from attacks. Testers need to check for vulnerabilities in the implementation of these security mechanisms.