diff --git a/google/cloud/recaptchaenterprise/v1beta1/recaptchaenterprise.proto b/google/cloud/recaptchaenterprise/v1beta1/recaptchaenterprise.proto
index 3172a6047fa4a..17ecdc1bbb4e1 100644
--- a/google/cloud/recaptchaenterprise/v1beta1/recaptchaenterprise.proto
+++ b/google/cloud/recaptchaenterprise/v1beta1/recaptchaenterprise.proto
@@ -401,6 +401,24 @@ message Assessment {
 }
 
 message Event {
+  // Setting that controls Fraud Prevention assessments.
+  enum FraudPrevention {
+    // Default, unspecified setting. If opted in for automatic detection,
+    // `fraud_prevention_assessment` is returned based on the request.
+    // Otherwise, `fraud_prevention_assessment` is returned if
+    // `transaction_data` is present in the `Event` and Fraud Prevention is
+    // enabled in the Google Cloud console.
+    FRAUD_PREVENTION_UNSPECIFIED = 0;
+
+    // Enable Fraud Prevention for this assessment, if Fraud Prevention is
+    // enabled in the Google Cloud console.
+    ENABLED = 1;
+
+    // Disable Fraud Prevention for this assessment, regardless of opt-in
+    // status or the Google Cloud console settings.
+    DISABLED = 2;
+  }
+
   // Optional. The user response token provided by the reCAPTCHA Enterprise
   // client-side integration on your site.
   string token = 1 [(google.api.field_behavior) = OPTIONAL];
@@ -431,6 +449,10 @@ message Event {
   // FraudPreventionAssessment component in the response.
   TransactionData transaction_data = 13
       [(google.api.field_behavior) = OPTIONAL];
+
+  // Optional. The Fraud Prevention setting for this Assessment.
+  FraudPrevention fraud_prevention = 17
+      [(google.api.field_behavior) = OPTIONAL];
 }
 
 // Transaction data associated with a payment protected by reCAPTCHA Enterprise.