Reject Spoofed Telegram Login Widget Requests in Yii2 Using HMAC Verification
Verify Telegram Login Widget data with HMAC-SHA-256 in Yii2 to reject forged user payloads and prevent replay attacks with expired timestamps.
🎯 Vulnerability: Web Security Vulnerability
💡 Defense Fix: Implement strict input validation, contextual output encoding, and enforce least-privilege authorization controls.