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System Design2026-08-13

How to ensure security of data in req/res

AI-Expanded — inferred from the question title, not from the original candidate report

Design a secure communication strategy for a RESTful API that protects sensitive user data during transit between the client and the server. Explain how you would implement mechanisms such as TLS encryption, authentication tokens, and input validation to prevent common vulnerabilities like man-in-the-middle attacks and data injection.

Context & Summary

Personal Interview Round 3

💻 Coding practice works best on desktop.
Code editors are too cramped on mobile screens.