#Validation

Articles about Validation — exploring patterns, best practices, and real-world implementations in production systems.

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Pratik Dhanave · ·13 min read

Input Validation and Injection

Part four of the API Security series: treat every byte crossing the boundary as hostile, validate against a schema you control, parameterize at the data sink, and never let a client-supplied URL become a pivot into your network.

Treating every input as hostile: schema/DTO validation (allow-list, reject unknown fields), injection defenses (parameterized queries), and SSRF — allow-listing destinations and blocking internal/link-local ranges including via redirects.

#API Security#Injection#SSRF#Validation#Security#APIs

All posts on this site are written by Pratik Dhanave, an Agentic AI Architect with 7+ years building production distributed systems, multi-agent AI platforms, and cloud-native infrastructure. About the author → Each article includes working code, architecture diagrams, and references to the specific frameworks and standards discussed. Browse all posts or explore related topics using the tag cloud above.