API Penetration Testing Services
Secure Your APIs Before Attackers Exploit Them
APIs are the new perimeter for modern applications, connecting web, mobile, and cloud services. Orasec's API penetration testing services uncover vulnerabilities in authentication, authorization, rate limiting, and business logic. We find hidden flaws that automated tools miss, helping you prevent data breaches, protect sensitive information, and ensure regulatory compliance across all your API endpoints.
API Threat Surface
Input validation, injection
Token, session, identity
BOLA, BFLA, permissions
Business rules, workflows
Exposure, leakage, mass assignment
APIs: The New Attack Surface for API Penetration Testing
APIs are critical entry points for modern applications, making API penetration testing essential. They process sensitive data from mobile apps, web applications, and third party integrations. A single broken authorization, insecure endpoint, or misconfigured API can put your organization at risk. Orasec's API penetration testing services identify vulnerabilities, test business logic flaws, and assess authentication and authorization controls to secure your APIs before attackers exploit them.
Our API Penetration Testing Services
REST API Penetration Testing
Evaluate RESTful endpoints for authentication bypass, injection flaws, and business logic vulnerabilities.
GraphQL API Pen Testing
Identify introspection abuse, query batching attacks, and broken authorization in GraphQL endpoints.
gRPC API Penetration Testing
Test gRPC APIs for insecure communication, improper serialization, and privilege escalation risks.
Authentication & Authorization Testing
Assess token handling, session management, OAuth flows, JWT manipulation, BOLA/BFLA flaws, and role escalation.
Rate Limiting & Throttling Assessment
Detect brute force vulnerabilities and abuse of rate limits on sensitive endpoints.
Business Logic Testing for APIs
Identify workflow abuse, data manipulation, and unintended API functionality.
API Security Testing for Third Party Integrations
Ensure secure communication and data handling in external or partner APIs.
Automated & Manual API Security Testing
Combine automated scans with hands on manual penetration to uncover exploitable vulnerabilities missed by tools.
API Specification Review & OWASP Alignment
Analyze OpenAPI/Swagger or GraphQL schemas to ensure adherence to OWASP API Top 10 security standards.
Attackers Call APIs Directly Secure Every Endpoint
Attackers bypass your web and mobile UIs, ignoring client side validations, and target every API endpoint for authorization failures. Orasec's API penetration testing services simulate these attacks, testing authentication, authorization, and business logic from an attacker's perspective. By identifying vulnerabilities before they are exploited, we help secure your APIs, protect sensitive data, and ensure your applications remain resilient against real world threats.
Attackers don't use your app the way users do. They call APIs directly, manipulate parameters, and test every endpoint for authorization failures. API security testing thinks like an attacker, testing what happens when the client isn't behaving.
OWASP API Top 10 Coverage
Orasec's API penetration testing services cover the OWASP API Top 10 to ensure your endpoints are secure against real world attacks. We identify vulnerabilities that can compromise authentication, authorization, and business logic, protecting sensitive data and API functionality.
Broken Object Level Authorization (BOLA)
Prevent unauthorized access to other users' data through API endpoints.
Broken Function Level Authorization
Secure admin and restricted functionality from misuse.
Mass Assignment Vulnerabilities
Detect and prevent unauthorized modifications of protected fields.
Rate Limiting Bypass
Test brute force, enumeration, and abuse of API limits.
GraphQL Introspection Abuse
Identify excessive data exposure and query batching risks.
JWT Manipulation & Signature Bypass
Protect token based authentication from tampering.
Server Side Request Forgery (SSRF)
Secure your API from requests that abuse server trust and internal services.
Read our SSRF deep diveSecure Your APIs Before Attackers Do
Protect your organization with Orasec's API penetration testing services. From REST and GraphQL to gRPC endpoints, we simulate real world attacks, test authentication and authorization, identify BOLA/BFLA flaws, and uncover business logic risks. Our penetration testing for APIs ensures sensitive data, internal systems, and third party integrations are secure, giving you actionable insights to prevent breaches and maintain regulatory compliance.
Authentication ≠ Authorization in API Penetration Testing
API Authentication Testing
Orasec's API penetration testing services evaluate all authentication mechanisms to ensure that tokens, sessions, and OAuth flows cannot be bypassed by attackers:
- • Token generation, validation, and misuse testing
- • JWT signature verification and claim integrity
- • OAuth and OpenID Connect flow vulnerabilities
- • Session management flaws
- • Multi factor authentication bypass attempts
API Authorization Testing
Our API penetration testing methodology examines access controls to ensure users and systems cannot exceed permissions:
- • Object level access control (BOLA) testing to prevent unauthorized data access
- • Function level access control (BFLA) to protect admin functionality
- • Role escalation paths to identify privilege abuse
- • Resource ownership validation across endpoints
- • Cross tenant data access testing
What Automated Tools Miss in API Pen Testing
Automated scanners catch simple misconfigurations, but real attackers exploit complex API workflows and authorization logic. Orasec uncovers:
Our API Penetration Testing Process
Discovery Enumerate all API endpoints, parameters, and documentation → Complete API surface visibility for testing
Authentication Testing Validate tokens, session handling, and auth flows → Authentication bypasses identified
Authorization Testing Test object level and function level access controls → Data exposure paths uncovered
Business Logic Testing Abuse API workflows to reveal unintended outcomes → Potential financial or data impact demonstrated
Rate Limiting & Abuse Controls Test throttling, brute force prevention, and endpoint abuse → Effectiveness of anti abuse mechanisms verified
Deliverables from Our API Penetration Testing
OWASP API Top 10 Report Findings mapped to API specific risks
Endpoint Security Matrix Authorization testing results for all endpoints
Authentication Assessment Comprehensive token, session, and auth flow analysis
Rate Limiting Analysis Evaluation of throttling and brute force protection
API Specification Review Security assessment of OpenAPI/GraphQL schemas
Real API Vulnerabilities Found
Found BOLA vulnerability exposing 10M+ user records through ID manipulation
Discovered admin API endpoints accessible with user tokens
Identified GraphQL query allowing extraction of entire database
Bypassed rate limiting to enumerate all valid email addresses
Compliance Alignment
Why Choose Orasec for API Penetration Testing
Orasec is a trusted API penetration testing company with certified testers and advanced methodologies. We combine real world attack simulations, manual testing, and automated scanning to identify authentication, authorization, business logic, and rate limiting flaws. With Orasec, your APIs are protected against broken access controls, data leaks, and security misconfigurations, giving you confidence in your application security posture.
Certified and experienced penetration testers
Manual and automated API testing for complete coverage
OWASP API Top 10 and ASVS alignment
Actionable, audit ready reports
Industry focused insights for REST, GraphQL, and gRPC
Frequently Asked Questions
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Learn moreGet Expert Guidance on API Penetration Testing
Connect with Orasec’s certified API penetration testers to identify risks, secure your endpoints, and strengthen internal and external systems.