diff --git a/lib/tunnelbroker/use-peer-to-peer-message-handler.js b/lib/tunnelbroker/use-peer-to-peer-message-handler.js
index 0adff1b8f..637d9dcab 100644
--- a/lib/tunnelbroker/use-peer-to-peer-message-handler.js
+++ b/lib/tunnelbroker/use-peer-to-peer-message-handler.js
@@ -1,264 +1,271 @@
 // @flow
 
 import invariant from 'invariant';
 import _isEqual from 'lodash/fp/isEqual.js';
 import * as React from 'react';
 
 import {
   useBroadcastDeviceListUpdates,
   useGetAndUpdateDeviceListsForUsers,
 } from '../hooks/peer-list-hooks.js';
-import { getForeignPeerDevices } from '../selectors/user-selectors.js';
+import {
+  getAllPeerDevices,
+  getForeignPeerDevices,
+} from '../selectors/user-selectors.js';
 import {
   verifyAndGetDeviceList,
   removeDeviceFromDeviceList,
 } from '../shared/device-list-utils.js';
 import { IdentityClientContext } from '../shared/identity-client-context.js';
 import type { DeviceOlmInboundKeys } from '../types/identity-service-types.js';
 import {
   peerToPeerMessageTypes,
   type PeerToPeerMessage,
 } from '../types/tunnelbroker/peer-to-peer-message-types.js';
 import { secondaryDeviceLogoutP2PMessageValidator } from '../types/tunnelbroker/user-actions-peer-to-peer-message-types.js';
 import { getConfig } from '../utils/config.js';
 import { getContentSigningKey } from '../utils/crypto-utils.js';
 import { getMessageForException } from '../utils/errors.js';
 import { hasHigherDeviceID, olmSessionErrors } from '../utils/olm-utils.js';
 import { getClientMessageIDFromTunnelbrokerMessageID } from '../utils/peer-to-peer-communication-utils.js';
 import { useSelector } from '../utils/redux-utils.js';
 
 function usePeerToPeerMessageHandler(): (
   message: PeerToPeerMessage,
   messageID: string,
 ) => Promise<void> {
   const { olmAPI, sqliteAPI } = getConfig();
 
   const identityContext = React.useContext(IdentityClientContext);
   invariant(identityContext, 'Identity context should be set');
   const { identityClient, getAuthMetadata } = identityContext;
 
   const foreignPeerDevices = useSelector(getForeignPeerDevices);
   const broadcastDeviceListUpdates = useBroadcastDeviceListUpdates();
   const getAndUpdateDeviceListsForUsers = useGetAndUpdateDeviceListsForUsers();
+  const allPeerDevices = useSelector(getAllPeerDevices);
 
   return React.useCallback(
     async (message: PeerToPeerMessage, messageID: string) => {
       if (message.type === peerToPeerMessageTypes.OUTBOUND_SESSION_CREATION) {
         const { senderInfo, encryptedData, sessionVersion } = message;
         const { userID: senderUserID, deviceID: senderDeviceID } = senderInfo;
 
         let deviceKeys: ?DeviceOlmInboundKeys = null;
         try {
           const { keys } =
             await identityClient.getInboundKeysForUser(senderUserID);
           deviceKeys = keys[senderDeviceID];
         } catch (e) {
           console.log(e.message);
         }
 
         if (!deviceKeys) {
           console.log(
             'Error creating inbound session with device ' +
               `${senderDeviceID}: No keys for the device, ` +
               `session version: ${sessionVersion}`,
           );
           return;
         }
 
         try {
           await olmAPI.initializeCryptoAccount();
           const result = await olmAPI.contentInboundSessionCreator(
             deviceKeys.identityKeysBlob.primaryIdentityPublicKeys,
             encryptedData,
             sessionVersion,
             false,
           );
           console.log(
             'Created inbound session with device ' +
               `${senderDeviceID}: ${result}, ` +
               `session version: ${sessionVersion}`,
           );
         } catch (e) {
           if (e.message?.includes(olmSessionErrors.alreadyCreated)) {
             console.log(
               'Received session request with lower session version from ' +
                 `${senderDeviceID}, session version: ${sessionVersion}`,
             );
           } else if (e.message?.includes(olmSessionErrors.raceCondition)) {
             const currentDeviceID = await getContentSigningKey();
             if (hasHigherDeviceID(currentDeviceID, senderDeviceID)) {
               console.log(
                 'Race condition while creating session with ' +
                   `${senderDeviceID}, session version: ${sessionVersion}, ` +
                   `this device has a higher deviceID and the session will be kept`,
               );
             } else {
               const result = await olmAPI.contentInboundSessionCreator(
                 deviceKeys.identityKeysBlob.primaryIdentityPublicKeys,
                 encryptedData,
                 sessionVersion,
                 true,
               );
               console.log(
                 'Overwrite session with device ' +
                   `${senderDeviceID}: ${result}, ` +
                   `session version: ${sessionVersion}`,
               );
               // Resend all not-yet confirmed messages that were encrypted
               // with overwrite session. Tracked in ENG-6982.
             }
           } else {
             console.log(
               'Error creating inbound session with device ' +
                 `${senderDeviceID}: ${e.message}, ` +
                 `session version: ${sessionVersion}`,
             );
           }
         }
       } else if (message.type === peerToPeerMessageTypes.ENCRYPTED_MESSAGE) {
         try {
           await olmAPI.initializeCryptoAccount();
           const decrypted = await olmAPI.decryptSequentialAndPersist(
             message.encryptedData,
             message.senderInfo.deviceID,
             messageID,
           );
           console.log(
             'Decrypted message from device ' +
               `${message.senderInfo.deviceID}: ${decrypted}`,
           );
 
           try {
             const parsedMessageToDevice = JSON.parse(decrypted);
             if (
               !secondaryDeviceLogoutP2PMessageValidator.is(
                 parsedMessageToDevice,
               )
             ) {
               return;
             }
             const { userID, deviceID: deviceIDToLogOut } = message.senderInfo;
             await removeDeviceFromDeviceList(
               identityClient,
               userID,
               deviceIDToLogOut,
             );
-            // TODO: broadcast device list update here
+            await broadcastDeviceListUpdates(
+              allPeerDevices.filter(deviceID => deviceID !== deviceIDToLogOut),
+            );
           } catch (e) {
             console.log(e);
           }
         } catch (e) {
           if (e.message?.includes(olmSessionErrors.messageAlreadyDecrypted)) {
             console.log(
               'Received already decrypted message from device ' +
                 `${message.senderInfo.deviceID}.`,
             );
           } else if (e.message?.includes(olmSessionErrors.messageOutOfOrder)) {
             console.log(
               'Received out-of-order message from device ' +
                 `${message.senderInfo.deviceID}.`,
             );
           } else {
             console.log(
               'Error decrypting message from device ' +
                 `${message.senderInfo.deviceID}: ${e.message}`,
             );
           }
         }
       } else if (message.type === peerToPeerMessageTypes.REFRESH_KEY_REQUEST) {
         try {
           await olmAPI.initializeCryptoAccount();
           const oneTimeKeys = await olmAPI.getOneTimeKeys(message.numberOfKeys);
           await identityClient.uploadOneTimeKeys(oneTimeKeys);
         } catch (e) {
           console.log(`Error uploading one-time keys: ${e.message}`);
         }
       } else if (message.type === peerToPeerMessageTypes.DEVICE_LIST_UPDATED) {
         try {
           const result = await verifyAndGetDeviceList(
             identityClient,
             message.userID,
             null,
           );
           if (!result.valid) {
             console.log(
               `Received invalid device list update for user ${message.userID}. Reason: ${result.reason}`,
             );
           } else {
             console.log(
               `Received valid device list update for user ${message.userID}`,
             );
           }
           await getAndUpdateDeviceListsForUsers([message.userID]);
 
           if (result.valid && message?.signedDeviceList?.rawDeviceList) {
             const receivedRawList = JSON.parse(
               message.signedDeviceList.rawDeviceList,
             );
 
             // additional check for broadcasted and Identity device
             // list equality
             const listsAreEqual = _isEqual(result.deviceList)(receivedRawList);
             console.log(
               `Identity and received device lists are ${
                 listsAreEqual ? '' : 'not'
               } equal.`,
             );
           }
         } catch (e) {
           console.log(
             `Error verifying device list for user ${message.userID}: ${e}`,
           );
         }
       } else if (
         message.type === peerToPeerMessageTypes.IDENTITY_DEVICE_LIST_UPDATED
       ) {
         try {
           const { userID } = await getAuthMetadata();
           if (!userID) {
             return;
           }
 
           await Promise.all([
             broadcastDeviceListUpdates(foreignPeerDevices),
             getAndUpdateDeviceListsForUsers([userID]),
           ]);
         } catch (e) {
           console.log(
             `Error updating device list after Identity request: ${
               getMessageForException(e) ?? 'unknown error'
             }`,
           );
         }
       } else if (message.type === peerToPeerMessageTypes.MESSAGE_PROCESSED) {
         try {
           const { deviceID, messageID: tunnelbrokerMessageID } = message;
           const clientMessageID = getClientMessageIDFromTunnelbrokerMessageID(
             tunnelbrokerMessageID,
           );
           await sqliteAPI.removeOutboundP2PMessagesOlderThan(
             clientMessageID,
             deviceID,
           );
         } catch (e) {
           console.log(
             `Error removing message after processing: ${
               getMessageForException(e) ?? 'unknown error'
             }`,
           );
         }
       }
     },
     [
       broadcastDeviceListUpdates,
       foreignPeerDevices,
       getAndUpdateDeviceListsForUsers,
       getAuthMetadata,
       identityClient,
       olmAPI,
       sqliteAPI,
+      allPeerDevices,
     ],
   );
 }
 
 export { usePeerToPeerMessageHandler };