What Is the Idempotency?
🚀 What Happens When Your API Receives the Same Request Twice? Imagine a customer clicks “Pay Now” twice because the page freezes. Or a payment gateway retries a request because it never received your response. 💥 Without proper protection, your application might charge the customer twice! This is where Idempotency becomes essential. Idempotency means that performing the same operation multiple times produces the same result as performing it once. For example, if a client retries a payment reque
🎯 Vulnerability: Web Security Vulnerability
💡 Defense Fix: Implement strict input validation, contextual output encoding, and enforce least-privilege authorization controls.