diff --git a/pom.xml b/pom.xml
index be44138..fc9feb3 100644
--- a/pom.xml
+++ b/pom.xml
@@ -16,7 +16,7 @@
         <vertx.version>4.5.13</vertx.version>
         <!-- check micrometer.version vertx-micrometer-metrics consumes before bumping up -->
         <micrometer.version>1.1.0</micrometer.version>
-        <uid2-shared.version>9.2.9</uid2-shared.version>
+        <uid2-shared.version>9.5.3</uid2-shared.version>
         <image.version>${project.version}</image.version>
         <junit-jupiter.version>5.10.1</junit-jupiter.version>
         <junit-vintage.version>5.10.1</junit-vintage.version>
@@ -132,6 +132,12 @@
             <artifactId>logback-classic</artifactId>
             <version>1.5.8</version>
         </dependency>
+        <dependency>
+            <groupId>org.mockito</groupId>
+            <artifactId>mockito-junit-jupiter</artifactId>
+            <version>5.12.0</version>
+            <scope>test</scope>
+        </dependency>
     </dependencies>
 
     <build>
diff --git a/src/main/java/com/uid2/optout/auth/InternalAuthMiddleware.java b/src/main/java/com/uid2/optout/auth/InternalAuthMiddleware.java
index 8ca8116..7f9912d 100644
--- a/src/main/java/com/uid2/optout/auth/InternalAuthMiddleware.java
+++ b/src/main/java/com/uid2/optout/auth/InternalAuthMiddleware.java
@@ -1,5 +1,7 @@
 package com.uid2.optout.auth;
 
+import com.uid2.shared.audit.Audit;
+import com.uid2.shared.audit.AuditParams;
 import com.uid2.shared.auth.OperatorKey;
 import com.uid2.shared.middleware.AuthMiddleware;
 import io.vertx.core.Handler;
@@ -48,15 +50,25 @@ public void handle(RoutingContext rc) {
             }
         }
     }
-
+    private final Audit audit;
     private final String internalApiToken;
 
-    public InternalAuthMiddleware(String internalApiToken) {
+    private Handler<RoutingContext> logAndHandle(Handler<RoutingContext> handler, AuditParams auditParams) {
+        return ctx -> {
+            ctx.addBodyEndHandler(v -> this.audit.log(ctx, auditParams));
+            handler.handle(ctx);
+        };
+    }
+
+    public InternalAuthMiddleware(String internalApiToken, String auditSource) {
         this.internalApiToken = internalApiToken;
+        this.audit = new Audit(auditSource);
     }
 
-    public Handler<RoutingContext> handle(Handler<RoutingContext> handler) {
-        final InternalAuthHandler h = new InternalAuthHandler(handler, this.internalApiToken);
+    public Handler<RoutingContext> handleWithAudit(Handler<RoutingContext> handler) {
+        InternalAuthHandler h;
+        final Handler<RoutingContext> loggedHandler = logAndHandle(handler, new AuditParams());
+        h = new InternalAuthHandler(loggedHandler, this.internalApiToken);
         return h::handle;
     }
 }
diff --git a/src/main/java/com/uid2/optout/vertx/OptOutServiceVerticle.java b/src/main/java/com/uid2/optout/vertx/OptOutServiceVerticle.java
index ffa1926..1dab316 100644
--- a/src/main/java/com/uid2/optout/vertx/OptOutServiceVerticle.java
+++ b/src/main/java/com/uid2/optout/vertx/OptOutServiceVerticle.java
@@ -35,12 +35,11 @@
 import java.net.URL;
 import java.time.Instant;
 import java.util.ArrayList;
+import java.util.Arrays;
 import java.util.Collection;
 import java.util.concurrent.atomic.AtomicReference;
 import java.util.stream.Collectors;
 
-import static com.uid2.optout.vertx.Endpoints.*;
-
 public class OptOutServiceVerticle extends AbstractVerticle {
     public static final String IDENTITY_HASH = "identity_hash";
     public static final String ADVERTISING_ID = "advertising_id";
@@ -68,7 +67,7 @@ public OptOutServiceVerticle(Vertx vertx,
         this.healthComponent.setHealthStatus(false, "not started");
 
         this.cloudStorage = cloudStorage;
-        this.auth = new AuthMiddleware(clientKeyProvider);
+        this.auth = new AuthMiddleware(clientKeyProvider, "optout");
 
         final String attestEncKey = jsonConfig.getString(Const.Config.AttestationEncryptionKeyName);
         final String attestEncSalt = jsonConfig.getString(Const.Config.AttestationEncryptionSaltName);
@@ -102,7 +101,7 @@ public OptOutServiceVerticle(Vertx vertx,
         this.defaultDeliveryOptions.setSendTimeout(addEntryTimeoutMs);
 
         this.internalApiKey = jsonConfig.getString(Const.Config.OptOutInternalApiTokenProp);
-        this.internalAuth = new InternalAuthMiddleware(this.internalApiKey);
+        this.internalAuth = new InternalAuthMiddleware(this.internalApiKey, "optout");
         this.enableOptOutPartnerMock = jsonConfig.getBoolean(Const.Config.OptOutPartnerEndpointMockProp);
     }
 
@@ -167,11 +166,11 @@ private Router createRouter() {
                 .allowedHeader("Content-Type"));
 
         router.route(Endpoints.OPTOUT_WRITE.toString())
-                .handler(internalAuth.handle(this::handleWrite));
+                .handler(internalAuth.handleWithAudit(this::handleWrite));
         router.route(Endpoints.OPTOUT_REPLICATE.toString())
-                .handler(auth.handle(this::handleReplicate, Role.OPTOUT));
+                .handler(auth.handleWithAudit(this::handleReplicate, Arrays.asList(Role.OPTOUT)));
         router.route(Endpoints.OPTOUT_REFRESH.toString())
-                .handler(auth.handle(attest.handle(this::handleRefresh, Role.OPERATOR), Role.OPERATOR));
+                .handler(auth.handleWithAudit(attest.handle(this::handleRefresh, Role.OPERATOR), Arrays.asList(Role.OPERATOR)));
         router.get(Endpoints.OPS_HEALTHCHECK.toString())
                 .handler(this::handleHealthCheck);
 
diff --git a/src/test/java/com/uid2/optout/auth/InternalAuthMiddlewareTest.java b/src/test/java/com/uid2/optout/auth/InternalAuthMiddlewareTest.java
new file mode 100644
index 0000000..0d0d5ad
--- /dev/null
+++ b/src/test/java/com/uid2/optout/auth/InternalAuthMiddlewareTest.java
@@ -0,0 +1,70 @@
+package com.uid2.optout.auth;
+
+import org.junit.jupiter.api.BeforeEach;
+import io.vertx.core.Handler;
+import io.vertx.core.http.HttpServerRequest;
+import io.vertx.ext.web.RoutingContext;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.extension.ExtendWith;
+import org.mockito.ArgumentMatchers;
+import org.mockito.Mock;
+import org.mockito.junit.jupiter.MockitoExtension;
+import org.mockito.junit.jupiter.MockitoSettings;
+import org.mockito.quality.Strictness;
+
+import static org.mockito.Mockito.*;
+
+@ExtendWith(MockitoExtension.class)
+@MockitoSettings(strictness = Strictness.LENIENT)
+public class InternalAuthMiddlewareTest {
+    @Mock
+    private RoutingContext routingContext;
+    @Mock
+    private HttpServerRequest request;
+    @Mock
+    private Handler<RoutingContext> nextHandler;
+    private InternalAuthMiddleware internalAuth;
+
+    @BeforeEach
+    public void setup(){
+        internalAuth = new InternalAuthMiddleware("apiToken", "test");
+        when(routingContext.request()).thenReturn(request);
+    }
+
+    @Test
+    public void internalAuthHandlerSucceed() {
+        when(request.getHeader("Authorization")).thenReturn("Bearer apiToken");
+        Handler<RoutingContext> handler = internalAuth.handleWithAudit(nextHandler);
+        handler.handle(routingContext);
+        verify(nextHandler).handle(routingContext);
+        verify(routingContext, times(0)).fail(any());
+        verify(routingContext, times(1)).addBodyEndHandler(ArgumentMatchers.<Handler<Void>>any());
+    }
+
+    @Test
+    public void internalAuthHandlerNoAuthorizationHeader() {
+        Handler<RoutingContext> handler = internalAuth.handleWithAudit(nextHandler);
+        handler.handle(routingContext);
+        verifyNoInteractions(nextHandler);
+        verify(routingContext).fail(401);
+        verify(routingContext, times(0)).addBodyEndHandler(ArgumentMatchers.<Handler<Void>>any());
+    }
+
+    @Test public void authHandlerInvalidAuthorizationHeader() {
+        when(request.getHeader("Authorization")).thenReturn("Bogus Header Value");
+        Handler<RoutingContext> handler = internalAuth.handleWithAudit(nextHandler);
+        handler.handle(routingContext);
+        verifyNoInteractions(nextHandler);
+        verify(routingContext).fail(401);
+        verify(routingContext, times(0)).addBodyEndHandler(ArgumentMatchers.<Handler<Void>>any());
+    }
+
+    @Test public void authHandlerUnknownKey() {
+        when(request.getHeader("Authorization")).thenReturn("Bearer unknown-key");
+        Handler<RoutingContext> handler = internalAuth.handleWithAudit(nextHandler);
+        handler.handle(routingContext);
+        verifyNoInteractions(nextHandler);
+        verify(routingContext).fail(401);
+        verify(routingContext, times(0)).addBodyEndHandler(ArgumentMatchers.<Handler<Void>>any());
+    }
+}