Assess learners' ability to identify and analyze common security vulnerabilities in RESTful APIs—such as broken authentication/authorization, injection, data exposure, insecure CORS/headers, missing input validation, and rate limiting gaps—evaluate their risk and impact, and propose prioritized, concrete mitigation strategies (secure auth, input validation, TLS, API gateways, rate limiting, secure headers, logging/monitoring, and testing) aligned with OWASP API Security guidance.