API Security
APIs are now the most targeted attack surface in modern applications, yet they are frequently the most poorly protected. Our API Security service provides a complete lifecycle approach — from inventory discovery through active testing to production monitoring — ensuring your APIs are resilient against the OWASP API Security Top 10 and beyond.
Top 10
OWASP API Coverage
90%
API Abuse Reduction
72 hrs
Full API Inventory Time
mTLS
Zero-Trust Service Comms
What's Included
Comprehensive service scope covering every aspect of api security.
API Discovery & Inventory
You cannot secure what you cannot see. We find all your APIs.
- Automated crawling and traffic analysis for shadow APIs
- OpenAPI / Swagger spec generation and gap analysis
- Undocumented endpoint enumeration
- API classification (public, partner, internal)
API Penetration Testing
Manual and automated testing against OWASP API Security Top 10.
- Broken Object Level Authorization (BOLA / IDOR)
- Broken Authentication and JWT attacks
- Excessive data exposure and mass assignment
- Injection, SSRF, and business logic flaws
API Gateway Hardening
Secure the layer between your clients and backend services.
- Rate limiting, throttling, and quota enforcement
- IP allowlisting and geo-restriction policies
- mTLS between services (zero-trust service mesh)
- API key lifecycle management
OAuth 2.0 & OIDC Implementation
Implement standards-based authentication and authorisation correctly.
- PKCE flow for SPA and mobile clients
- Token introspection and revocation
- Scope design and least-privilege token policies
- Token rotation and short-lived credential enforcement
Runtime API Threat Detection
Detect and block API attacks in real time.
- Anomaly detection on API traffic patterns
- Credential stuffing and scraping detection
- Schema validation to block malformed payloads
- Real-time alerting and automatic blocking
GraphQL Security
Specialised assessment and hardening for GraphQL APIs.
- Introspection and field suggestion controls
- Depth and complexity limiting to prevent DoS
- Batching attack prevention
- Persisted query allowlisting
Our Methodology
A structured, repeatable process that delivers consistent outcomes.
Discover
Enumerate all API endpoints including shadow and undocumented APIs.
Analyse
Review API specifications, auth flows, and data handling.
Test
Manual and automated penetration testing against OWASP API Top 10.
Harden
Implement gateway policies, rate limits, and schema validation.
Monitor
Deploy runtime threat detection and anomaly alerting.
Report
Findings report with severity ratings and remediation guidance.
Business Benefits
What You Receive
Technology & Tools
Industry-leading platforms and frameworks used in our engagements.
Frequently Asked Questions
Answers to the most common questions about our API Security service.