Implementing the OWASP API Security Top 10 in Node.js and PostgreSQL

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OWASP API Security Top 10 (2023) with vulnerable code, working fixes and tests in Node.js: BOLA, auth, rate limits, SSRF and a CI authorization matrix.
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A hands-on walkthrough of the OWASP API Security Top 10 using a sample Node.js, Express, and PostgreSQL application. Each vulnerability is demonstrated through insecure code, followed by defensive implementations and automated tests. The guide covers authorization, authentication, resource limits, SSRF, configuration, and third-party API security, culminating in a CI authorization matrix.