intermediate · cohort
Java Security Essentials for APIs
OAuth2 flows, JWT handling cautions, and practical threat modeling for Spring-heavy shops.
5 weeks · 7h/week
JPY 112,000
Informational rate—final fees appear on your enrollment agreement.
Request information Money-back policyProgram narrative
Security without fear-mongering. Labs wire resource servers, explore scope design, and store secrets using environment patterns suitable for JP data residency conversations. You will threat-model one API you bring and leave with mitigations prioritized by effort.
What ships in the box
- OAuth2 dance whiteboard animations with Spring Authorization Server snippets
- JWT validation lab highlighting clock skew and revocation gaps
- CORS and CSRF decision tree for SPAs calling your APIs
- Dependency scanning hook using OWASP Dependency-Check
- Secrets management comparison worksheet (Vault, cloud KMS, plain env)
- Incident tabletop on leaked refresh tokens
- Mentor review of your threat model draft
Outcomes you can describe
- List concrete mitigations for your top three threats
- Configure a resource server with tested negative cases
- Explain token lifetimes to a product manager in plain language
Lead mentor
Jonas Weber
Backend mentor; built payment adapters across EU and JP regions.
Cohort questions
We discuss coordination with pentesters but do not perform live attacks on your systems.
High-level references to Japan APPI and contract clauses; not legal advice.
Binary reverse engineering, mobile attestation, and hardware HSM programming.
Experience notes
Clock skew exercise caught a bug our staging env masked for months.