API Penetration Testing

Application Programming Interface (API) Penetration Testing Services. Protecting the First Line of Defense of your Application.

What we do

APIs are the connective tissue between almost everything on your application; both internal and external messages are mostly through APIs. Our API Testing team digs up the security coverage of the APIs, penetrates them and reports the flaws.

Many attack APIs with automated vulnerability scanners and call it a day, but we know it doesn’t work that way. We have a very particular set of skills for hacking into APIs, Skills that make us a nightmare for Blackhats. We also conduct one on one sessions with the development team to assist and explain the mitigation strategy.

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api penetration testing services company

API Pentesting as a Service

We have collaborated with a variety of industries, including Airlines, Supply chains, Fintech, Health-tech, e-commerce, etc. We believe that a pentest will have the greatest impact on a company when the pentesting team has a thorough understanding of the web application’s API business logic. Therefore, we dedicate a specialized team to comprehending the business logic of the issue at hand.

rest ,soap, web api penetration testing services


As part of the penetration testing process, we impersonate real hackers and dive deep into systems to identify vulnerabilities.

Penetration testing has become one of the most fundamental necessities for the security of digital assets, and it is highly recommended to identify vulnerabilities and evaluate the application’s strength. Bentley, Mercedes-Benz, and Walmart have praised our team of professional hackers for infiltrating their systems and securing their global assets.

This team is now at your disposal to thoroughly hack into your systems and applications using the most effective industry-standard methods and tools.


Our penetration testers analyze your applications thoroughly and employ hacker-like thought processes to identify vulnerabilities, including zero-day vulnerabilities. Using the OWASP Web Security Testing Guide and SANS Application Security Standard methodologies, we provide in-depth manual security assessments that exceed the capabilities of vulnerability scanners.


We use industry-standard tools and global best practices to identify every security vulnerability. We approach each project by employing the same tools and methods as actual attackers in order to identify new risks. addressing regulations like NIST, OWASP, and SANS. Our penetration testing engineers are accredited and certified security professionals with credentials including CREST, CEH, and OSCP, among others.


Get a penetration testing and remediation report that is written in a developer-friendly language and is simple to implement. Reports are frequently insufficient due to the fact that not all vulnerabilities are immediately fixed, which is why we provide one-on-one meetings with security experts for developers with each report and detailed vulnerability fixing support for up to a year after testing with Oncall Advice.

Benefits for all Security Stakeholders

Chief Information Security Office and Security Team

Continuously identify and mitigate risks, meet compliance requirements more quickly, improve application delivery agility, enhance collaboration with the development team, and reduce testing costs, without sacrificing quality, we achieve greater testing program control, faster turnaround, early detection and repair, and continuous monitoring.

Chief Technology Officer and Product Development Team

Early detection and remediation of security vulnerabilities, improved network security, managed risk-based approach to servers, easy collaboration with security testing team, quick turn-around times, advanced analytics and live sessions instead of only pdf reports, detailed reports, and ongoing detailed documentation and lifecycle and history of vulnerabilities

Chief Executive Office and business management

Ensure cost-effective compliance with a constantly changing regulatory landscape, protect brand reputation, predictable costs and straightforward billing, and lower administrative costs.


What do we check for when we conduct API security testing?

No more space for black-hat hackers.


Examine APIs for the most common vulnerabilities.

We`re Universal

Test for all types of APIs such as GraphQL, SOAP, RPC, REST etc

Load Testing

We go above and beyond everything security, Testing the flexibility of the API servers to make sure it's secure it its truest form

Business Logic Vulnerabilities

Design and implementation faults in an application that enable an attacker to induce undesired behavior in an application

Updates and CVEs

Design and implementation faults in an application that enable an attacker to induce undesired behavior in an application

Source Code Review

Perform secure code reviews, both automated and manual, to discover security flaws in the application code.

Check for internal integrity

By implementing the appropriate data validation and error checking, you can ensure that sensitive data is never miscategorized or stored incorrectly

PII Disclosure

Information that can be revealed using factors that can be used to reliably identify a single surveyed individual, either on their own or in combination with additional variables.

Our testing searches for flaws in the back-end services that the app uses, in addition to looking for vulnerabilities in the app itself. We ensure that all components of the app are covered during testing by focusing on both the app and its back-end services. 

To detect hard-to-find vulnerabilities, we use reverse engineering, binary, and file-level analysis, which goes considerably deeper than a standard penetration test.

These security testing activities may include but are not limited to:

Steps Involved in Wattlecorp API Pen Testing


Information Gathering


Information Analysis


Vulnerability Detection


Penetration Testing


Privilege escalation


Result Analysis




Security Briefing Workshop


Mitigation Support


Complementary Retesting


Summary Report

Steps Involved in Wattlecorp API Security Testing

Threat Modelling

The application's threat profile details all potential vulnerabilities, risks, and associated threats. This enables testers to execute customized test plans to simulate how hackers might attack, thereby identifying real risks rather than the generic vulnerabilities uncovered by automated scans, thereby preventing false positives.

Application Mapping

Identify the application's specifics and map them to the threat profile's various facets. Some parameters include Key chains, brute-force attacks, and parameter tampering, Malicious input and fuzzing Session IDs and time lockouts, Error and exception handling, Logs and log access control.

Client Side Risks

Interaction with local storage on the platform, use of encryption, using modules with known vulnerabilities, and insecure API calls are key areas of focus for client-side attack simulation. With appropriate access controls this could be mitigated

Network Side Risks

Simulation of network layer attacks verifies communication channel attacks by capturing network traffic and evaluating transport-layer protection as data is transmitted between the application and servers.

Server Side Risks

Back-ends such as web services and APIs provide the intended functionality of the application. Our testing team simulates attacks against the web application's web services and APIs.

Database Risks

Backends such as microservices and data storage, cache and memory usage, and encryption in data storage, particularly authentication data, personally identifiable data, and other sensitive data.

Explore the API penetration testing strategy

Our API penetration testing service utilizes an in-depth, advanced security testing methodology to identify critical issues, exposure points, and business logic flaws within your applications. We identify application security vulnerabilities by combining automated and manual testing and eliminating false positives, assessing every aspect of your application security with source-code-assisted application penetration testing that reveals a broader range of vulnerabilities and exposures.

Applications are evaluated before projects commence. In the subsequent phase, the team manually verifies the results of automated vulnerability scans. The team then identifies and exploits implementation errors and business logic manually.

API Security Testing Service Outputs

Detailed Report

The Pen Test report describes the exact vulnerabilities found on the platform, how they were discovered, the methodologies and tools used to find them, and any visual proof that was found. A security vulnerability risk rating must be included in the report for future reference. " Recommendations for cleanup and how to carry them out

1:1 Workshop

Because vulnerabilities are not resolved promptly, static PDF Reports are insufficient. That's why we offer a one-on-one workshop and security debrief between the security team and developers to ensure they understand significant and high-level vulnerabilities, as well as guidance on remediation and countermeasures, and assistance in learning how to avoid them in the future. We can conduct this debriefing face-to-face if necessary.


We provide a free retest to ensure that the remedial actions were effective and done correctly. And, after applying all applicable updates, the system was able to fix the identified vulnerabilities without causing any new problems.

Secure Badge

We provide a gratis retesting service after the customer has implemented the recommended repair actions. We'll provide you with a summary report after the project is completed, confirming that remedial measures have been taken. We also supply you with a service that warns you about new vulnerabilities for up to a year if it is judged to be satisfactory.

1:1 Advice On-call

We provide advice and assistance for up to a year after the complete report is filed, and we address any queries you may have regarding putting the recommendations into effect. This service is provided through developer-friendly channels like phone, email, zoom, meet, Slack, Jira, and teams.

Why choose Wattlecorp API Security testing program 

Budgeting for API Security Testing

Vulnerability scanning and penetration testing are not the same. while vulnerability scan only identifies vulnerabilities, a penetration tester digs deeper to identify, then attempt to exploit those vulnerabilities to gain access to secure systems or stored sensitive data.

The average cost of a api penetration test can cost anywhere from $6,000 for a small, non-complex app to more than $100,00 for a large, complex one. Which is why wattlecorp provides a range of services that are suitable for everyone from startups to enterprises without compromising on quality.

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Get a Customized Quote

Get a quote for your API penetration testing requirement. Or get a free evaluation before you invest in our services

Penetration Testing as a Service

Wattlecorp API penetration testing as a subscription services allows you take advantage of reducing the cost of testing, whether you are a startup investing for the first time or a big enterprise trying to reduce the cost of continuous testing. Choose from onetime to unlimited manual API penetration testing using onetime, monthly or annual subscription fee

Price factor

100% Free. 100% Clear.

We provide 100% free consultation for limited time period to ensure misuse of our consulting services. Our team is excited to see oppourtunities in making your application safe and our committment towards making it happen is always on. 

Use a this free consultation to understand your applications security needs. We’d love to chat about your Web app security objectives. We welcome the chance to connect and explore opportunities to accelerate your journey to secure your web applications

You’re about to get $990 worth consultation for free.


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We have something for everyone, including pricing and answers. 

Tip • Book a consultation to get personalised recommendations. 

If you’ve a web application or a smartphone application, getting a penetration test becomes a necessity than a luxury.

Absolutely wrong. Give us a chance to prove it (wink, wink).

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