Identify. Exploit. Secure.
At Cyberintelsys Consulting Services, we help organizations secure their critical business APIs through comprehensive API Penetration Testing (API VAPT). Our experienced team identifies vulnerabilities within APIs, guides your teams through remediation, and helps protect your business before attackers exploit security weaknesses.
API penetration testing is a structured and ethical security assessment that simulates real-world cyberattacks on APIs (REST, SOAP, GraphQL, etc.). This testing evaluates how well your APIs protect data, authenticate users, and enforce authorization. It helps uncover vulnerabilities that attackers could exploit to compromise applications, steal sensitive information, or manipulate business logic.
Real-World Attack Simulation
Simulates modern attack techniques targeting APIs, such as broken authentication, excessive data exposure, and improper access controls to validate the security of your API endpoints.
Vulnerability Identification & Prioritization
Identifies vulnerabilities within API endpoints, configurations, authentication, authorization, and data handling. Findings are categorized and prioritized based on risk severity and potential business impact.
Actionable Security Insights
Delivers detailed, easy-to-understand reports with practical remediation steps. These help your technical teams effectively address vulnerabilities and enhance API security posture.
Types of Security Testing in API Penetration
A Secure API Begins with Testing Every Layer – Inside and Out.
Insecure Authentication & Authorization Testing
Broken Object-Level Authorization (BOLA) Testing
Lack of Resource Limiting / Rate Limiting Testing
Input Validation & Injection Testing
Sensitive Data Exposure & Information Leakage Testing
Security Misconfiguration Assessment
Broken Function-Level Authorization Testing
We define objectives, scope (public/internal APIs), authorized methodologies, and obtain approvals to ensure alignment with business goals and compliance requirements.
Your trusted advisor in penetration testing . Safeguard your digital assets – get in touch today!
Our clients rely on us to secure their critical applications and protect their data. Hear what they have to say about our expertise, dedication, and the impact of our web application penetration testing services.
The team transformed our brand's online presence with creativity & precision.The results exceeded our expectations! Their digital marketing strategies helped us reach a broader audience & significantly boosted our sales
The team transformed our brand's online presence with creativity & precision.The results exceeded our expectations! Their digital marketing strategies helped us reach a broader audience & significantly boosted our sales
The team transformed our brand's online presence with creativity & precision.The results exceeded our expectations! Their digital marketing strategies helped us reach a broader audience & significantly boosted our sales
The team transformed our brand's online presence with creativity & precision.The results exceeded our expectations! Their digital marketing strategies helped us reach a broader audience & significantly boosted our sales
Improved API Security
Identify and address vulnerabilities within APIs and backend systems to proactively reduce risk and prevent data exposure or misuse.
Regulatory Compliance
Supports compliance with regulations such as PCI-DSS, HIPAA, GDPR, and industry standards like OWASP API Security Top 10 through regular security assessments.
Enhanced Customer Trust & Reputation
Demonstrates a strong commitment to securing customer data and protecting backend systems, fostering trust and preserving brand reputation.
Cost Savings
Early identification of vulnerabilities prevents costly breaches, reduces downtime, and avoids emergency remediation expenses.
Infrastructure & Backend Risk Assessment
Evaluates APIs in conjunction with backend infrastructure, ensuring end-to-end security coverage and resilience against complex attack vectors.
Security Policy Validation
Validates existing API security controls, policies, and enforcement mechanisms to ensure they align with best practices and industry benchmarks.
Black Box Testing
Simulates an external attacker with no prior knowledge of the API internals, testing from an outsider’s perspective to uncover exposed vulnerabilities.
White Box Testing
Conducted with access to API documentation, source code, and backend architecture. This allows for thorough evaluation of security controls, data flow, and authorization mechanisms.
Gray Box Testing
Combines both black box and white box elements. The tester has limited knowledge (documentation, credentials) to assess security realistically from both external and internal perspectives.
First-Time Penetration Testing Buiyer Guide
Read the essential with our go-to guide to your first penetration test, everything you need to know to make an informed and successful investment in your security
First-Time Penetration Testing Buiyer Guide
Read the essential with our go-to guide to your first penetration test, everything you need to know to make an informed and successful investment in your security
First-Time Penetration Testing Buiyer Guide
Read the essential with our go-to guide to your first penetration test, everything you need to know to make an informed and successful investment in your security
First-Time Penetration Testing Buiyer Guide
Read the essential with our go-to guide to your first penetration test, everything you need to know to make an informed and successful investment in your security
First-Time Penetration Testing Buiyer Guide
Read the essential with our go-to guide to your first penetration test, everything you need to know to make an informed and successful investment in your security
Our structured, step-by-step process ensures every API vulnerability is identified, risks are prioritized, and your business remains protected against emerging threats. From initial engagement to retesting, we help you secure your APIs effectively.
1. Initial Consultation & Requirement Gathering
We understand your API environment, critical business functions, compliance objectives, and security concerns to tailor the engagement to your needs.
2. Scoping & Planning
We clearly define the testing scope, API types (REST, SOAP, GraphQL), endpoints, environments, and authorized techniques to align expectations and reduce risk.
3. Reconnaissance & Enumeration
We analyze API documentation, endpoints, authentication flows, and interactions with backend systems to identify potential attack vectors.
4. Vulnerability Assessment
We systematically assess endpoints for vulnerabilities such as broken authentication, insecure configurations, excessive data exposure, and injection risks.
5. Manual Testing & Exploitation
We simulate real-world attack scenarios, including authentication bypass, privilege escalation, data leakage, insecure direct object references (IDOR), and mass assignment issues.
6. Reporting & Remediation Guidance
We provide comprehensive reports with technical findings, severity ratings, risk impact, and detailed remediation steps to help mitigate risks.
7. Presentation & Remediation Support
We present findings to stakeholders, explain technical vulnerabilities, and assist with prioritizing remediation and implementation strategies.
8. Retesting & Continuous Improvement
After remediation, we perform retesting to validate fixes and provide guidance for continuous improvement in API security and compliance readiness.
Protect Your Business from Emerging Cyber Threats
Cyberintelsys helps you stay one step ahead of today’s advanced cyber risks. Our expert-led penetration testing and security assessments are designed to identify vulnerabilities before attackers do — helping you strengthen your security posture and meet compliance standards. Fill out the form, and we’ll get back to you with a tailored solution.
Frequently Asked Questions
Quick Answers to Your API Security Concerns
We require details about API specifications (documentation, Swagger, Postman), authentication methods, environment details, and any compliance or security objectives.
Timelines depend on the number of endpoints, complexity, and integrations. Engagements typically range from a few days to a few weeks.
Testing is conducted safely and ethically. We recommend using staging or test environments to minimize potential impact on production.
We assess for authentication and authorization flaws, input validation issues, injection vulnerabilities, business logic errors, insecure configurations, and excessive data exposure.
You will receive a comprehensive report detailing vulnerabilities, severity ratings, business impact, and actionable remediation guidance. Presentations are provided to explain findings and assist with remediation planning.