APIs are the backbone of modern applications — and attackers know it. HackLabs delivers in-depth API security testing that uncovers authentication flaws, data leakage, and injection vulnerabilities across REST, GraphQL, and SOAP interfaces.
Talk to an ExpertAs organisations adopt microservices, mobile backends, and third-party integrations, API security has become critical. The OWASP API Security Top 10 documents a class of vulnerabilities unique to API interfaces — many of which are invisible to traditional web application scanners. HackLabs' testers specialise in modern API architectures, combining manual exploration with automated tooling to find the vulnerabilities that matter.
Testing mapped to OWASP API Security Top 10 including Broken Object Level Authorisation, Excessive Data Exposure, and Function Level Authorisation flaws.
We test all major API styles including undocumented endpoints, mobile backends, and internal microservice APIs — not just what's in your Swagger docs.
Deep testing of authentication and authorisation mechanisms including JWT attacks, OAuth flow abuse, API key exposure, and scope bypasses.
Comprehensive testing of RESTful interfaces including authentication, authorisation, input validation, and data exposure across all endpoints.
Introspection abuse, batch query attacks, field-level authorisation bypass, and injection vulnerabilities in GraphQL APIs.
JWT signature bypass, OAuth2 flow abuse, token scope escalation, API key exposure, and session fixation in API contexts.
Systematic testing for Broken Object Level Authorisation — the most prevalent API vulnerability class — across all accessible resources.
Testing for lack of resource controls, rate limit bypasses, and denial-of-service vectors in API endpoints.
Testing for mass assignment vulnerabilities, excessive data exposure in API responses, and sensitive field disclosure.
We define the engagement boundaries, objectives, and rules of engagement. Clear scope means focused testing and accurate results.
Senior consultants conduct both automated and manual testing, replicating real-world attack techniques against your environment.
Detailed technical findings with risk ratings, proof-of-concept evidence, and clear remediation guidance for both technical and executive audiences.
We stay engaged beyond the report. Our team answers remediation questions and offers a complimentary re-test on critical findings.
CREST-certified testers across all disciplines. Independently audited methodology you can trust.
Extensive track record across enterprise, government, and critical infrastructure sectors.
Founded by Chris Gatford — over two decades of offensive security experience at your service.
No graduates on client engagements. Every test is run by experienced, certified professionals.
Comprehensive testing of the web front-end interfaces that consume your APIs.
Test the mobile clients that interact with your API backends on iOS and Android.
Test the infrastructure and network layer hosting your API services.
Talk to a HackLabs specialist and get a tailored assessment proposal within one business day.
Talk to an Expert