add api signature on Input

README.md

@@ -37,6 +37,7 @@ Checklist of the most important security countermeasures when designing, testing
 - [ ] Validate user input to avoid common vulnerabilities (e.g. `XSS`, `SQL-Injection`, `Remote Code Execution`, etc.).
 - [ ] Don't use any sensitive data (`credentials`, `Passwords`, `security tokens`, or `API keys`) in the URL, but use standard Authorization header.
 - [ ] Use an API Gateway service to enable caching, Rate Limit policies (e.g. `Quota`, `Spike Arrest`, or `Concurrent Rate Limit`) and deploy APIs resources dynamically.
+- [ ] Use API signature to prevent some guy testing manually or automatically
 
 ## Processing
 - [ ] Check if all the endpoints are protected behind authentication to avoid broken authentication process.