Client-Side Validation is NOT Security (React Native + Node + Zod)
Code:
Front end: https://github.com/jmejiamu/securing-...
Backend: https://github.com/jmejiamu/idor-example
Client-side validation improves user experience — but it does NOT secure your API.
In this video, I demonstrate how to use Zod for form validation in a React Native app and how to properly enforce validation on a Node.js + Express backend using TypeScript.
We cover:
• Defining validation schemas with Zod
• Using safeParse in React Native
• Why client-side validation can be bypassed
• Enforcing validation at the server trust boundary
• How this relates to OWASP Top 10 and secure architecture
From a security perspective, mobile apps are not trusted. All input validation that protects your system must happen on the server.
This video is part of my Mobile Application Security series focused on building secure React Native + Node systems.
#ReactNative #NodeJS #TypeScript #Zod #AppSec #OWASP #MobileSecurity