Here are a few key recommendations and best practices that you ought to keep in mind when working with integration services as well as with Webhooks:
- Secure your Webhooks: As Webhooks deliver data to publicly available URLs in your application, there are chances that a spoofer may provide your URL with false data. The easiest way to safeguard against such events is by forcing TLS connections. You can even secure the Webhook further by adding tokens to the URL that act as unique identification marker and then rotate these tokens on a regular basis.
- Securing your API: Make sure you always encrypt secret keys and API keys using KMS service and the encryption helpers provided by Lambda. The decrypting logic can be written in your Lambda function itself and invoked using the AWS SDKs.