diff --git a/keyserver/src/socket/socket.js b/keyserver/src/socket/socket.js
--- a/keyserver/src/socket/socket.js
+++ b/keyserver/src/socket/socket.js
@@ -6,6 +6,7 @@
 import t from 'tcomb';
 import WebSocket from 'ws';
 
+import { baseLegalPolicies } from 'lib/facts/policies.js';
 import { mostRecentMessageTimestamp } from 'lib/shared/message-utils';
 import {
   serverRequestSocketTimeout,
@@ -226,6 +227,8 @@
         clientSocketMessageInputValidator,
         clientSocketMessage,
       );
+      await policiesValidator(viewer, baseLegalPolicies);
+
       const serverResponses = await this.handleClientSocketMessage(
         clientSocketMessage,
       );