API Security Testing

Assess your API calls & endpoints for security vulnerabilities with a comprehensive security test

API Security Testing

API security testing is a crucial process that ensures the protection of endpoints within an API. By identifying and addressing vulnerabilities, API security testing helps reduce the risk of a data breach or other malicious activity. As APIs become increasingly prevalent in modern applications, it is vital to ensure their security in order to protect sensitive customer information and system processes from potential threats. Without proper API security measures in place, organizations are at risk of suffering negative consequences as a result of a security breach.

Penetration testing, also referred to as a pen test or ethical hacking, involves simulating a cyber attack on computer systems using various techniques and technologies. This may include manually or automatically compromising servers, API calls and endpoints, web applications, wireless networks, network devices, mobile devices, and other potential vulnerabilities. The goal of a penetration test is to identify and assess the security of these systems, helping organizations to safeguard against actual attacks.


API Penetration Testing

Without a defined protocol, conducting security assessments on microservice APIs can be risky because traditional web security assessment tools and methodologies may not be equipped to handle the specific characteristics and functionality of these APIs. This can make it difficult for penetration testers to effectively assess the security of a microservice API.

Cyber Legion’s API penetration testing process is based on industry-standard best practices, including the OWASP Top 10, OWASP ASVS, and OWASP Testing Guide. Our team specializes in testing web-based APIs, REST APIs, and mobile APIs. We also take the time to thoroughly analyze the target API to understand its authentication type, structure, request methods, responses, and roles. We even test for vulnerabilities on a real production API or in a staging environment. Our goal is to identify and exploit any bugs that may exist in order to improve the security of your API.

API Security Testing Methodology – What do we test for?

  • We test a wide range of attack vectors including the OWASP API Top 10 2019, as well as our own specific testing methodology to ensure the best results.

  • Much of what is tested for is to ensure the security of the application and its data, but also the security of other applications which may rely on the API for data or services.

  • Authentication, authorization and injection as well as rate-limiting are just a small part of how we ensure the security of an API.

  • We perform the assessment based on OWASP Framework checklists.

  • Information Gathering
  • Broken Object Level Authorization
  • Broken User Authentication
  • Excessive Data Exposure
  • Lack of Resources & Rate Limiting
  • Broken Function Level Authorization
  • Mass Assignment Security
  • Misconfiguration Injection
  • Improper Assets Management
  • Insufficient Logging & Monitoring
  • Complete API Testing

How can we Help?

At Cyber Legion, we offer ongoing penetration testing and remediation services through our Secure Client Portal to enhance and protect your assets and improve your organization’s security posture. Our team has extensive expertise in application security, mobile app security, API security, IOT, and network penetration testing.

Our testing methodologies are based on reputable security frameworks and are designed to minimize disruption during the testing process and keep you informed as the test progresses. We work closely with our clients to achieve the best results for every engagement. Trust us to provide comprehensive security testing that clearly identifies any issues and helps improve the security of your organization.


APIs play a vital role in many important business processes, and it is essential that they are secure and able to withstand attacks. API security testing involves simulating a hacker’s attack on an API to evaluate its security. A security researcher will use various tactics to try to access sensitive user data or disrupt API functionality, and then provide a report to the company outlining any vulnerabilities found and suggesting solutions. Ensuring the security of APIs is critical, especially when they handle personal information.

Achieve all of your security objectives with the help of Cyber Legion’s comprehensive services. Our platform offers both penetration testing and vulnerability management, all in one convenient location. Stay up-to-date on live events and results through our bug tracking, risk dashboards, and ticketing systems. Experience the ultimate in security with Cyber Legion’s integrated solutions.

 API Penetration Testing Service Features


 Unlimited Cyber Legion CSaaS Platform access

 Black, Grey or White Box Testing

 Scheduled Security testing service – Work Request Button whenever you want


 Manual & Automated Security Testing & Risk Validation 


 Business Logic & Technical Vulnerability Testing

 Detailed Exploitation Evidence

 Security Frameworks Checklists OWASP, SANS etc

 OSINT & Threat Intelligence

 Custom Checklists


 Full Support & References for Remediation

 Collaboration & Integration with ticketing, bug trackers etc

 Unlimited Analysis, Tracking & Reporting

 Live Events & Alerting emails 

 Retesting of discovered issues – unlimited

 On-Demand and Custom Offering that Best Suits your Organization’s needs.

The OWASP Security Knowledge Framework is an open source web application that explains secure coding principles in multiple programming languages. The goal of OWASP-SKF is to help you learn and integrate security by design in your software development and build applications that are secure by design.

API’s have increasingly become a target for hackers and malicious users over the years. Improper security can lead to massive data breaches and loss of user data which can go undetected due to the API being abused in a way that seems normal.

API security testing can provide several benefits, including:

  1. Identifying vulnerabilities: API security testing helps identify any vulnerabilities that could potentially compromise the security of your system.

  2. Improving data security: By testing for security vulnerabilities, you can ensure that sensitive data is protected from unauthorized access.

  3. Meeting compliance requirements: Many industries have strict compliance requirements, and API security testing can help ensure that your system meets these requirements.

  4. Protecting against cyber attacks: API security testing can help prevent cyber attacks by identifying and fixing vulnerabilities that could be exploited by hackers.

  5. Enhancing user trust: By ensuring the security of your system, you can build trust with your users and improve customer satisfaction.


Penetration tests (or pen tests) are attacks on your companies’ software and hardware systems, carried out by ‘ethical hackers’ to expose your system’s vulnerabilities. One example is a web application pen test. Web apps, browsers and plug-ins can house sensitive financial or personal data, so hackers are increasingly putting their efforts towards gaining access to them. The test would examine the endpoint of every web application.

The time that penetration testing takes depends on the size and complexity of your organization’s system structure, as well as the scope of the test itself. For the ‘average’ company, a network penetration test should take around three days. For a merchant processing millions of credit cards a year, for example, a pen test will take over a week, or possibly two.

The penetration testing cost depends on the facts identified during scoping, such as the agreed time, goals, technical resources, approach, and remedial support.

Security Testing Pricing list refence 

Discover, Analyze, Prioritize, Track, Visualize & Report


We can help improve your Business

Ensure your Organization Assets are well  protected in front of the Cyber Attacks

Delivery Workflow

Register for Free and get your test done withn 24 to 48 hours

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Sample Report

Here is a sample report of a Security Testing Engagement

See Sample Report PDF

Work Request

Order your security test and Get Your Report

Get Your Test Report

1. Client Onboarding

Access to all of Cyber Legion's services is provided through the Web Secure Client Portal. To create a Free account, you can sign up through the portal, or contact the Cyber Legion team and they will set up an account for you.

2. NDA , Agreements & Digital Signature

The integration of Digital Signature in our Web Client Portal allows us to legally sign all necessary documents and agreements, enabling us to carry out security assessments on targeted systems.

3. Submit Work Request

Our pricing structure is adaptable to meet the needs of all clients. By filling out the Work Request Form, you can select from pre-existing services or request a personalized proposal.

The Cyber Legion team will acknowledge your order, set up a project in your account, and proceed with the testing and delivery.

4. Security Testing & Report

We meet agreed upon SLAs and follow security testing framework checklists. Based on our commitment, our team of engineers will utilize all of our tools, automation, and testing capabilities to achieve the objectives.

Within the agreed upon timeframe, you will receive a report on the security test that was conducted, including the results, recommendations, and references for addressing any identified issues.

5. Retesting & Validation of Remediation

We not only identify potential threats, risks, and vulnerabilities, but also provide detailed recommendations for resolution. To ensure complete remediation, we offer complimentary retesting and a range of ongoing security testing options for continued vulnerability detection and verification.