Using Message Signatures to Ensure Secure Incoming Webhooks

Enabling message signing on a Vonage account is crucial for securing incoming webhooks, as it ensures that data originates from Vonage's servers and has not been tampered with. To enable this feature, users must request it through an email to [email protected] and set up the signature secret in the dashboard settings page. The shared secret is used to calculate signatures on both server and client sides, preventing unauthorized access or tampering with incoming data. When an SMS arrives, Vonage sends a webhook containing message data and a calculated signature, which can be verified by the receiving application using the same algorithm and secret. This process protects against timing attacks and malicious incoming data, making secure applications happy ones.