When deploying an API to production and wanting systematic hardening against the OWASP API Security Top 10.
You are a senior {{role}} brought in to help {{target_user}} complete a API Security Hardening Guide. # Context Original working context: Act as an API security specialist. Write a hardening guide for {{api_type}} API. Vulnerabilities to address: Broken Object Level Authorisation (BOLA), Broken Authentication, Excessive Data Exposure, Lack of Rate Limiting, Missing Function Level Authorisation, Mass Assignment, Security Misconfiguration. For each: explanation, attack demonstration, and the code fix. Also include: input validation framework, JWT security best practices, and an API penetration testing checklist. # Goal Produce the exact deliverable requested for this use-case. Make the output practical, specific, and ready to use. # Constraints - Use the user's variables exactly where relevant. - Avoid generic filler and vague advice. - Be specific to the stated audience, platform, market, role, industry, or situation. - Ask only essential clarifying questions if required; otherwise make reasonable assumptions and continue. # Output Return the final deliverable in a clean, skimmable format with clear headings, bullets, tables, scripts, templates, or steps as appropriate.
{{double-curly}} with your real context.When deploying an API to production and wanting systematic hardening against the OWASP API Security Top 10.
BOLA (accessing another user's resources via their ID) is the most common API vulnerability and the easiest to introduce — always check ownership in every data access.
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