diff --git a/keyserver/src/deleters/account-deleters.js b/keyserver/src/deleters/account-deleters.js
--- a/keyserver/src/deleters/account-deleters.js
+++ b/keyserver/src/deleters/account-deleters.js
@@ -120,7 +120,6 @@
   }
   return {
     currentUserInfo: {
-      id: viewer.id,
       anonymous: true,
     },
   };
diff --git a/keyserver/src/fetchers/user-fetchers.js b/keyserver/src/fetchers/user-fetchers.js
--- a/keyserver/src/fetchers/user-fetchers.js
+++ b/keyserver/src/fetchers/user-fetchers.js
@@ -279,7 +279,7 @@
 
 async function fetchCurrentUserInfo(viewer: Viewer): Promise<CurrentUserInfo> {
   if (!viewer.loggedIn) {
-    return ({ id: viewer.cookieID, anonymous: true }: CurrentUserInfo);
+    return ({ anonymous: true }: CurrentUserInfo);
   }
   const currentUserInfo = await fetchLoggedInUserInfo(viewer);
   return currentUserInfo;
diff --git a/keyserver/src/responders/responder-validators.test.js b/keyserver/src/responders/responder-validators.test.js
--- a/keyserver/src/responders/responder-validators.test.js
+++ b/keyserver/src/responders/responder-validators.test.js
@@ -46,7 +46,7 @@
 
 describe('user responder validators', () => {
   it('should validate logout response', () => {
-    const response = { currentUserInfo: { id: '93078', anonymous: true } };
+    const response = { currentUserInfo: { anonymous: true } };
     expect(logOutResponseValidator.is(response)).toBe(true);
     response.currentUserInfo.anonymous = false;
     expect(logOutResponseValidator.is(response)).toBe(false);
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
@@ -215,7 +215,6 @@
   }
   return {
     currentUserInfo: {
-      id: viewer.id,
       anonymous: true,
     },
   };
diff --git a/keyserver/src/session/cookies.js b/keyserver/src/session/cookies.js
--- a/keyserver/src/session/cookies.js
+++ b/keyserver/src/session/cookies.js
@@ -571,7 +571,6 @@
       threadInfos,
       userInfos: (values(userInfos).map(a => a): UserInfo[]),
       currentUserInfo: {
-        id: viewer.cookieID,
         anonymous: true,
       },
     }: ServerSessionChange);
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
@@ -297,7 +297,6 @@
           authErrorMessage.sessionChange = {
             cookie: this.viewer.cookiePairString,
             currentUserInfo: {
-              id: this.viewer.cookieID,
               anonymous: true,
             },
           };
@@ -334,7 +333,6 @@
           authErrorMessage.sessionChange = {
             cookie: anonViewer.cookiePairString,
             currentUserInfo: {
-              id: anonViewer.cookieID,
               anonymous: true,
             },
           };
diff --git a/lib/types/user-types.js b/lib/types/user-types.js
--- a/lib/types/user-types.js
+++ b/lib/types/user-types.js
@@ -89,11 +89,10 @@
   });
 
 export type LoggedOutUserInfo = {
-  +id: string,
   +anonymous: true,
 };
 export const loggedOutUserInfoValidator: TInterface<LoggedOutUserInfo> =
-  tShape<LoggedOutUserInfo>({ id: t.String, anonymous: tBool(true) });
+  tShape<LoggedOutUserInfo>({ anonymous: tBool(true) });
 
 export type CurrentUserInfo = LoggedInUserInfo | LoggedOutUserInfo;
 export const currentUserInfoValidator: TUnion<CurrentUserInfo> = t.union([