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API Security Testing


Cryptika | Vulnerability Management Service

APIs connect mobile applications, web portals, partner systems, payment services, customer platforms, internal workflows, and cloud services. When API authorization, token handling, rate limiting, validation, or data exposure controls are weak, attackers may abuse business functions without needing the user interface.

Cryptika’s API Security Testing service assesses API endpoints through authorized testing focused on authentication, authorization, object-level access, function-level access, schema validation, abuse cases, and practical remediation.

What API Testing Covers

The assessment reviews the security behavior of API endpoints included in the agreed scope. Testing can include REST APIs, JSON-based services, backend services used by web or mobile channels, partner APIs, internal APIs, and exposed administrative APIs where authorized.

Cryptika assesses how the API handles identity, tokens, roles, tenants, objects, functions, parameters, errors, rate limits, schema rules, response data, sensitive operations, and logging considerations.



Testing Focus Areas
  • Endpoint inventory and exposed API attack surface.
  • Authentication tokens, expiry, refresh behavior, and token misuse scenarios.
  • Object-level authorization across users, customers, accounts, tenants, or business units.
  • Broken function-level authorization and role-based access weaknesses.
  • Rate limits, throttling, replay behavior, and abuse resistance.
  • Schema validation, parameter tampering, mass assignment, and input handling.
  • Excessive data exposure in responses, errors, exports, and nested objects.
  • API documentation review and undocumented endpoint discovery where authorized.
  • Business abuse cases such as transaction manipulation, workflow bypass, or privilege misuse.
  • Logging, monitoring, and traceability considerations for sensitive API events.

Scope Caution

API testing must be scoped carefully when production data, third-party integrations, payment services, or shared environments are involved. Rate-limit and abuse testing require explicit authorization and safe test boundaries.


Book a Scoping Call

Use a scoping call to confirm API scope, roles, authentication model, test environment, rate-limit boundaries, and reporting expectations.


Book a Call!

Why Organizations Need It

API weaknesses often create high-impact risk because APIs may expose direct access to data and business actions. A user may not be able to see another customer’s record in the interface, but an API authorization flaw may still allow access by changing an object identifier, token context, or function call.

API testing helps development, security, IT, and product teams validate whether backend services enforce security correctly, not only whether the front end appears secure.

How Cryptika Delivers the Work

Cryptika starts with API scope confirmation, documentation review, test account planning, role mapping, rules of engagement, and environment selection. Testing combines manual analysis, request manipulation, authorization testing, token review, schema testing, and validation of sensitive business functions.

The report explains each finding with evidence, affected endpoint, reproduction approach, risk impact, and remediation guidance for backend developers, API owners, and security teams.

Expected Deliverables
  • Confirmed API scope and rules of engagement.
  • Endpoint and role testing summary.
  • API security findings with evidence and risk rating.
  • Authorization and data exposure analysis.
  • Remediation guidance for development and platform teams.
  • Retesting report where included.
What the Client Should Prepare

The client should prepare API documentation, endpoint lists, test accounts for different roles and tenants, sample requests, authentication method details, testing environment, allowed rate limits, excluded endpoints, technical contacts, and approval for any production testing restrictions.



Cryptika Governance, Risk and Compliance Consulting Services

Common Standards and Regulations

API testing can support any agreed application security, regulatory, contractual, or internal requirement. Common examples include OWASP API security practices, OWASP ASVS, PCI DSS where payment services are involved, ISO/IEC 27001, NIST CSF 2.0, Central Bank of Jordan expectations, Saudi NCA controls, SAMA expectations, secure SDLC requirements, and customer assurance reviews.

Related Cryptika Services

    FAQ

    Can you test APIs without full documentation?

    Yes, but documentation improves coverage. Where documentation is incomplete, endpoint discovery can be included if authorized.

    Do you test authorization between users and tenants?

    Yes. Object-level and function-level authorization are core API testing areas.

    Can API testing support mobile or web application testing?

    Yes. API testing often complements mobile and web testing because many critical actions are handled by backend services.



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    #15 Wakalat Street, Al-Swiefieh, Amman, Jordan 962 6 2000 289 [email protected]