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API Security for Beginners: A Practical, Hands-On Guide to OWASP API Top 10, OAuth2, JWT, GraphQL & Secure Microservices
Paperback
Computer SecuritySystem Administration
Publisher: Independently Published
Published: Dec 21 2025
Pages: 280
Weight: 1.44
Height: 0.59 Width: 8.50 Depth: 11.00
Language: English
API Security for Beginners: A Practical, Hands-On Guide to OWASP API Top 10, OAuth2, JWT, GraphQL & Secure Microservices is the complete beginner-friendly roadmap to securing modern APIs in a world where every application-web, mobile, cloud, microservices and AI-driven systems-depends on fast, safe and reliable API communication.
Designed for developers, DevOps engineers, AppSec beginners, cloud engineers, and ethical API hackers, this book takes you from zero to fully operational by teaching the exact techniques used by today's engineering and security teams. No fluff. No outdated theories. Only real-world, modern API security practices that work in 2025 and beyond.
You'll learn how modern API breaches happen, why API attacks continue to rise, and how to defend your services using industry-proven tools, frameworks and architectures. From understanding the OWASP API Top 10 to implementing OAuth2/OIDC, building secure microservices, deploying API gateways, applying Zero-Trust, running WAF rules and integrating security into CI/CD pipelines-this book shows you step-by-step how professionals secure APIs at scale.
Unlike traditional textbooks, this book is 100% practical. Every chapter includes hands-on labs using real tools such as Postman, Burp Suite, OWASP ZAP, K6, Keycloak, Kong, NGINX, Istio, Prometheus, Grafana, OpenTelemetry and more. You will build, hack, fix and harden your own REST + GraphQL microservices environment-exactly how modern security engineers work.
You'll end with a full-stack end-to-end API security project where you design, secure, test, monitor and document a complete microservices platform. By the final chapter, you will confidently implement secure-by-default APIs and defend applications against real-world attacks.
What You Will Learn
✔ Fundamentals of modern API security
REST, GraphQL, microservices, OAuth2, OpenID Connect, JWT, Zero-Trust, gateways, WAFs, service mesh.
✔ OWASP API Top 10 (2023)
Practical explanations, developer-friendly examples, and hands-on break-and-fix labs.
✔ OAuth2/OIDC and Identity Security
Auth Code with PKCE, Client Credentials, Device Code, token lifecycles, rotation, revocation and secure token storage.
✔ Real-World API Attacks and Protections
BOLA/IDOR, Mass Assignment, Injection, Business Logic Abuse, Over-fetching, Under-fetching, GraphQL threats.
✔ API Gateways and Zero-Trust Microservices
Kong, NGINX, mTLS, rate limiting, quotas, WAF rules, API throttling, schema validation and edge security.
✔ Full DevSecOps Integration
Newman, ZAP Baseline, Schemathesis, Spectral, K6, SBOM, supply-chain scanning and automated CI/CD security tests.
✔ Observability, Monitoring and Incident Response
Prometheus, Grafana, OpenTelemetry, distributed tracing, centralized logging, dashboards, alerts and runbooks.
✔ Full End-to-End Capstone Project
A complete secure microservices application you build, secure, test and monitor from scratch.
Who This Book Is For
- Beginners entering API security or DevSecOps
- Developers who want to build secure APIs from day one
- DevOps/Cloud engineers integrating real security pipelines
- AppSec learners seeking structured hands-on experience
- Ethical hackers and bug bounty hunters testing APIs
- Teams migrating to microservices, GraphQL or Zero-Trust
No prior security experience required-everything is taught step-by-step with real examples.
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