diff --git a/keyserver/src/responders/user-responders.js b/keyserver/src/responders/user-responders.js
--- a/keyserver/src/responders/user-responders.js
+++ b/keyserver/src/responders/user-responders.js
@@ -32,6 +32,8 @@
   userSettingsTypes,
   notificationTypeValues,
   authActionSources,
+  recoveryFromDataHandlerActionSources,
+  recoveryFromReduxActionSources,
 } from 'lib/types/account-types.js';
 import {
   type ClientAvatar,
@@ -781,7 +783,16 @@
     initialContentEncryptedMessage,
     initialNotificationsEncryptedMessage,
     doNotRegister,
+    source,
   } = request;
+  if (
+    Object.values(recoveryFromReduxActionSources).includes(source) ||
+    Object.values(recoveryFromDataHandlerActionSources).includes(source)
+  ) {
+    console.log(
+      `Session recovery attempted by userID=${userID} source=${source ?? ''}`,
+    );
+  }
   const calendarQuery = normalizeCalendarQuery(request.calendarQuery);
 
   // 1. Check if there's already a user for this userID. Simultaneously, get