Secure APIs before attackers exploit them. NuageSEC's API VAPT combines automated security assessment with expert manual testing to identify, validate and prioritize API security weaknesses across the authorized environment.
Ready to scope an API VAPT engagement? Talk to our VAPT team.
APIs connect applications, mobile platforms, cloud services, partners and business-critical systems. A weakness in an API can expose sensitive data, bypass authorization controls, manipulate business functions or create unauthorized access.
API Vulnerability Assessment and Penetration Testing is an authorized security assessment designed to identify and validate vulnerabilities in application programming interfaces. The assessment examines API behaviour, authentication, authorization, data exposure, business logic, input handling, configuration and other controls relevant to the API architecture.
Unlike basic vulnerability scanning, API VAPT uses expert validation to determine whether relevant weaknesses are exploitable and what their potential security or business impact could be. The goal is: Identify → Validate → Understand Impact → Remediate.
APIs often expose application functionality and data directly to users, applications and third parties. OWASP notes that APIs can expose application logic and sensitive data, creating security risks that require API-specific testing. API VAPT helps organizations:
NuageSEC's current API security service explicitly covers REST, GraphQL, SOAP, gRPC, internal and public APIs.
See NuageSEC's dedicated API security service page for full coverage details. Explore API Security Testing →
Assess authentication mechanisms and token handling to identify weaknesses that could allow unauthorized access.
Test whether users, applications and services can access only the objects, functions and resources they are permitted to use.
Assess BOLA/IDOR-style weaknesses by validating resource ownership and object-level authorization.
Test whether lower-privileged users can invoke administrative or otherwise restricted API functions.
Assess API responses and object properties for unnecessary or unauthorized disclosure of sensitive information.
Test critical workflows such as transactions, payments, subscriptions, approvals and multi-step processes for logic flaws.
Assess throttling, brute-force protection, resource-consumption controls and relevant abuse scenarios.
Assess exposed methods, deprecated versions, undocumented endpoints, configuration weaknesses and other API-management risks.
Evaluate security boundaries involving partner APIs, payment services, cloud services and other external integrations.
NuageSEC's current API-security material specifically identifies BOLA, broken authentication, object-property authorization, unrestricted resource consumption, broken function authorization, sensitive business-flow abuse, SSRF, security misconfiguration, improper inventory management and unsafe API consumption.
NuageSEC's API-security material maps its testing to the OWASP API Security Top 10 (2023). These are the risks listed in the OWASP API Security Top 10 2023.
NuageSEC's current published API methodology follows this general sequence from discovery and enumeration through manual testing, reporting and re-testing. NIST SP 800-115 similarly emphasizes planning, conducting, analysing and reporting technical security assessments.
| Capability | API Vulnerability Scanning | API VAPT |
|---|---|---|
| Method | Automated techniques only | Automated + expert manual validation |
| Authentication | Limited analysis | Manually validated |
| Authorization | Limited analysis | Manually validated |
| Business Logic | Not assessed | Manually tested |
| Object-Level Access (BOLA/IDOR) | Not assessed | Manually validated |
| Function-Level Access | Not assessed | Manually validated |
| Data Exposure | Pattern-based detection | Manually validated for real impact |
| Complex Attack Paths | Not identified | Investigated and chained |
Scanning identifies potential weaknesses. API VAPT validates relevant security risks and their potential impact. NuageSEC's current API service explicitly distinguishes automated vulnerability scanning from deeper API security testing and manual validation.
NuageSEC's published API sample report covers REST and GraphQL endpoint mapping, BOLA/IDOR, authentication and JWT validation, rate limiting, data exposure, mass assignment and developer remediation guidance. The current sample-report hub lists 35+ API vulnerability checkpoints.
See the depth of findings and remediation guidance in a real assessment. View Sample API Penetration Testing Report →
NuageSEC's published healthcare case study documents an API security assessment in which testing identified:
NuageSEC provided proof-of-concept evidence, risk classification and remediation recommendations, including stronger authorization validation, object-level access control, reduced data exposure and strengthened authentication/session controls.
Review the full findings, evidence and remediation guidance from this assessment. View Healthcare API Security Case Study →
NuageSEC currently identifies SaaS, fintech, healthcare, enterprise and cloud-native environments among the API environments it serves.
See how API VAPT priorities shift across different industries. Explore API VAPT by Industry →
Learn more about NuageSEC's offensive-security team and research-led approach. Explore NuageSEC →
APIs are frequently part of a web application's attack surface.
Explore Web Application VAPTMobile apps are typically backed by the same APIs assessed here.
Explore Mobile Application VAPTCloud-hosted API environments may need broader cloud-configuration testing.
Explore Cloud VAPTMulti-tenant SaaS platforms add tenant-isolation and role-boundary testing on top of API VAPT.
Explore SaaS VAPTFor APIs spanning multiple business units, Enterprise VAPT covers the broader estate.
Explore Enterprise VAPTAPI VAPT is an authorized security assessment that identifies and validates vulnerabilities in APIs and relevant supporting systems.
API vulnerability scanning primarily identifies potential technical weaknesses through automated techniques. API VAPT adds expert manual validation to assess exploitability, authorization, business logic and potential impact.
Depending on scope, NuageSEC can assess REST, GraphQL, SOAP, gRPC, public, internal and other authorized API environments.
Yes. Authentication and authorization are core API-security testing areas, including object-level and function-level access controls.
Yes. BOLA/IDOR testing evaluates whether authenticated users can access resources belonging to other users or outside their intended permissions.
Yes. Critical API workflows can be tested for logic flaws and unauthorized workflow manipulation.
Where included in scope, API VAPT can assess throttling, brute-force protections, resource-consumption controls and related abuse scenarios.
Production testing should only be performed under clearly defined authorization, scope and rules of engagement designed to minimize operational impact.
Depending on scope, the report can include API inventory, methodology, vulnerabilities, affected endpoints, evidence, severity, business impact, remediation and re-testing results.
API VAPT can provide technical security-testing evidence relevant to applicable requirements, but the assessment itself does not guarantee certification or compliance.
Tell us about your organization. Our VAPT team will get back within one business day to define the right scope and next steps.