Voucher Offer Hi hackers! Hack The Box voucher codes are available at discounted rates, with 25–30% off. All types of vouchers are available.

API Security

API pentesting — REST, GraphQL and gRPC, the OWASP API Top 10, BOLA/BFLA, webhooks and gateways.

May 24, 2026

API Reconnaissance

Mapping the API attack surface before you send a single attack: OpenAPI spec discovery, JS bundle mining, recovering historical UR…

May 24, 2026

REST API Fundamentals

REST is a set of constraints, not a library. HTTP verbs and their safety/idempotency, the status-code decision tree, statelessness…