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Facebook App Secret

Service Name: Facebook (Meta)

Service Description: Facebook (now Meta) provides a platform for developers to create applications that integrate with Facebook's services. App secrets are used to authenticate API requests and secure communications between your app and Facebook's servers.

Service Address: https://developers.facebook.com/

Validation Type: API Auth

IP Allow list: IP restrictions can be configured in the Facebook Developer Console under App Settings > Advanced > Server IP Whitelist

Secret Access Scope: Grants access to Facebook Graph API endpoints and services based on the permissions requested during user authorization. Can be used to generate access tokens, verify signed requests, and authenticate API calls.

Secret Revokement URL: https://developers.facebook.com/apps/ (Navigate to your app, then Settings > Basic, and reset the client secret)

Secret Example: 3482c9eef9de9513a3f64c51f565b8cb

Suspicious Activity Investigation Instructions:

  • Review the Facebook Developer Dashboard for unusual API usage patterns
  • Check for unexpected app behavior or unauthorized access to user data
  • Monitor API call logs for requests from unfamiliar IP addresses
  • Verify webhook endpoints and redirect URIs for any unauthorized changes
  • Review app permissions and ensure they match expected functionality
  • Check for unexpected user authentication events

Mitigation Instructions:

  • Immediately reset your app secret in the Facebook Developer Console
  • Navigate to your app in the Developer Dashboard
  • Go to Settings > Basic
  • Select Reset Secret to generate a new app secret
  • Update the secret in all authorized applications and services
  • Review and revoke any suspicious access tokens
  • Enable additional security features like App Secret Proof
  • Consider implementing IP whitelisting for API calls
  • Review and update app permissions to limit access scope