
“
Qualysec did a great job identifying vulnerabilities in our web and cloud applications and gave us clear steps to fix them. They stuck to deadlines, handled re-tests, and supported well.
Kenny Kim
Product Manager

At Qualysec, we help you discover security weaknesses and protect your REST APIs with expert penetration testing. Our comprehensive services include vulnerability identification, remediation guidance, and assurance of regulatory compliance.
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DEFINITION
Regular API penetration testing ensure security and integrity of APIs, protect sensitive data and preventing potential breaches.
REST API penetration testing is a security assessment that simulates real-world attacks against RESTful APIs to identify vulnerabilities that could allow unauthorized access, data exposure, privilege escalation, account takeover, or backend system compromise. The assessment evaluates API authentication mechanisms, authorization controls, endpoint security, input validation, session management, business logic, rate limiting, encryption, and third-party integrations.

Vulnerabilities
We conduct manual penetration testing in 2 phases, pre-authentication and post-authentication to identify vulnerabilities.

Process
At QualySec, we safeguard your API with our thorough penetration testing process.

We collaborate closely with you to outline the test boundaries to identify critical assets and potential risk areas. This tailored approach ensures a focused and effective assessment.

Business Development Manager
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Testimonials
Read what our clients say about our services. See how Qualysec has helped several businesses to keep their digital assets safe!
Key Benefits
Here are some important benefits of identifying security vulnerabilities in your APIs. Our API penetration testing services help you find out weaknesses and secure them before unethical hackers exploit them.
Strengthen your APIs against potential cyber threats. By identifying weak points in your API, we help you patch vulnerabilities before attackers can exploit them.
Make sure your APIs meet industry standards and regulatory requirements. Our API penetration testing aligns your systems with critical security guidelines to maintain compliance.
Detect hidden flaws in your APIs before hackers do. Our thorough evaluation reveals potential entry points and helps you address security gaps proactively.
Our findings guide your developers toward safer coding practices by highlighting common API vulnerabilities. This helps build more secure APIs in future projects.
Our API penetration testing provides a detailed risk assessment so that you can make informed decisions about security investments by understanding the real risks your APIs face.
Boost stakeholder confidence with a third-party security assessment. Our unbiased report demonstrates your commitment to security and builds trust with clients, partners, and regulators.
Other Types
Don't let vulnerabilities compromise your REST APIs. Our expert team will identify weaknesses and provide effective solutions to enhance your security. Don't wait—secure your APIs today!

We simulate an external attacker with no inside knowledge. This method tests your REST API's real-world defenses against unknown threats.

Our team works with full access to your API's source code and architecture. This in-depth approach uncovers hidden vulnerabilities and logic flaws.

We blend both approaches, using limited internal information. This balanced method provides comprehensive security insights while mimicking a semi-informed attacker.
Free Downloads
Access our free resource collection to empower your business with the knowledge to strengthen your security posture and maintain a secure lead.

A detailed document listing vulnerabilities, risks, and recommended fixes. It includes an executive summary and technical findings.

A step-by-step breakdown of our testing process that covers inspection, scanning, and other important phases of penetration testing.

Summary of our approach, tools used, and scope of testing. The document outlines how we simulate real-world attacks to identify security gaps.




PRICING
Our Penetration Testing Service Pricing Could Save You Millions!
Process To Start Assessment
Here are some key steps to start protecting your APIs from cyber threats with Qualysec.
Reach out to us and our friendly team will listen to your concerns and understand your unique security needs. Whether you prefer a call, email, or chat, we're ready to start your journey towards a more secure API.
We send you a simple pre-assessment form to fill up with the appropriate information. This helps us understand your API's architecture, current security measures, and specific concerns.
After we review our findings from the pre-assessment and outline our proposed approach, we discuss security strategy and answer any questions you may have through either online or face-to-face meetings.
We sign an NDA to protect your sensitive information and finalize the service agreement. This ensures clear expectations and a smooth partnership from the start.
We provide our clients with a checklist of everything we need to begin testing, such as access credentials and documentation. Our team assists and ensures a smooth start to your API's security enhancement journey.
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Don't let vulnerabilities compromise your APIs. Our expert team will identify weaknesses and provide effective solutions to enhance your security. Don’t wait—secure your APIs today!

Total No. Of Vulnerabilities

Years in Business

Assessment Completed

Trusted Clients

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FAQ
Get quick answers to common questions about API security testing, its benefits, frequency, costs, and more.
API vulnerability scanning uses automated tools to identify known security issues and misconfigurations. API penetration testing combines automated scanning with manual exploitation techniques to validate vulnerabilities, identify business logic flaws, and demonstrate real-world attack scenarios that scanners often miss.
Qualysec evaluates authentication mechanisms such as JWT tokens, OAuth 2.0, API keys, session tokens, and multi-factor authentication implementations. We also assess authorization controls to identify privilege escalation risks, role bypasses, insecure direct object references, and access control weaknesses.
Yes, business logic vulnerabilities are among the most dangerous API security risks because they often bypass traditional security controls. Qualysec manually tests workflows, transactions, role restrictions, approval processes, pricing mechanisms, and application-specific functionality to identify flaws that automated tools cannot detect.
Yes, mobile applications rely heavily on APIs for communication with backend systems. REST API penetration testing helps identify vulnerabilities that could expose user data, allow account takeover, bypass application controls, or compromise mobile application security.
Yes, Qualysec assesses JWT implementation flaws, token validation weaknesses, token leakage, insecure token storage, OAuth misconfigurations, privilege escalation paths, and authentication bypass vulnerabilities.
Many compliance frameworks require organizations to identify and remediate technical vulnerabilities regularly. API penetration testing provides evidence that APIs handling sensitive data have undergone independent security testing and helps support compliance requirements under SOC 2, ISO 27001, PCI DSS, HIPAA, GDPR, and other frameworks.
REST APIs should be tested at least annually and whenever significant changes are made to authentication mechanisms, business logic, backend integrations, user roles, or application functionality. Organizations with active development cycles often conduct testing before major releases.
REST API testing focuses on endpoint-based architectures where resources are accessed through multiple URLs. GraphQL API testing focuses on query-based architectures that introduce unique risks such as excessive data exposure, introspection abuse, query complexity attacks, and authorization bypasses. Each requires a specialized testing approach.