diff --git a/src/main.jsx b/src/main.jsx
index 1135be6..e032138 100644
--- a/src/main.jsx
+++ b/src/main.jsx
@@ -2,8 +2,11 @@ import React from 'react';
 import ReactDOM from 'react-dom/client';
 import { RouterProvider } from 'react-router-dom';
 import { router } from './routes/router';
+import { installAuthFetchInterceptor } from './shared/services/authFetch';
 import './shared/styles/global.css';
 
+installAuthFetchInterceptor();
+
 ReactDOM.createRoot(document.getElementById('root')).render(
   <React.StrictMode>
     <RouterProvider router={router} />
diff --git a/src/modules/auth/hooks/useLogin.js b/src/modules/auth/hooks/useLogin.js
index 2a50f20..ef21588 100644
--- a/src/modules/auth/hooks/useLogin.js
+++ b/src/modules/auth/hooks/useLogin.js
@@ -7,6 +7,13 @@ import {
   storeAuthSession,
 } from '../services/authService';
 
+function decodeAuthPayload(payload) {
+  const base64 = payload.replace(/-/g, '+').replace(/_/g, '/');
+  const paddedBase64 = base64.padEnd(base64.length + ((4 - (base64.length % 4)) % 4), '=');
+
+  return JSON.parse(atob(paddedBase64));
+}
+
 export function useLogin() {
   const navigate = useNavigate();
   const [isSubmitting, setIsSubmitting] = useState(false);
@@ -20,6 +27,21 @@ export function useLogin() {
   }, []);
 
   useEffect(() => {
+    const hashParams = new URLSearchParams(window.location.hash.replace(/^#/, ''));
+    const authPayload = hashParams.get('auth');
+
+    if (authPayload) {
+      try {
+        storeAuthSession(decodeAuthPayload(authPayload));
+        window.history.replaceState({}, document.title, window.location.pathname);
+        navigate('/home', { replace: true });
+        return;
+      } catch {
+        window.history.replaceState({}, document.title, window.location.pathname);
+        setError('Não foi possível concluir o login Microsoft.');
+      }
+    }
+
     const params = new URLSearchParams(window.location.search);
     const token = params.get('token');
     const rawUser = params.get('user');
diff --git a/src/modules/auth/services/authService.js b/src/modules/auth/services/authService.js
index fc68b52..8ad5a7b 100644
--- a/src/modules/auth/services/authService.js
+++ b/src/modules/auth/services/authService.js
@@ -30,6 +30,8 @@ export function startMicrosoftLogin() {
 }
 
 export function storeAuthSession(authResult) {
-  window.localStorage.setItem('authToken', authResult.token);
-  window.localStorage.setItem('authUser', JSON.stringify(authResult.user));
+  window.sessionStorage.setItem('authToken', authResult.token);
+  window.sessionStorage.setItem('authUser', JSON.stringify(authResult.user));
+  window.localStorage.removeItem('authToken');
+  window.localStorage.removeItem('authUser');
 }
diff --git a/src/modules/auth/services/sessionService.js b/src/modules/auth/services/sessionService.js
index 6adbcb8..2e04998 100644
--- a/src/modules/auth/services/sessionService.js
+++ b/src/modules/auth/services/sessionService.js
@@ -8,16 +8,8 @@ const PROFILE_ALIASES = {
   agent: 'agent',
 };
 
-const DEMO_PROFILE_BY_USERNAME = {
-  admin: 'admin',
-  'lucas.admin': 'admin',
-  supervisor: 'supervisor',
-  'marina.alves': 'supervisor',
-  'rafael.nunes': 'supervisor',
-};
-
 function readStoredUser() {
-  const rawUser = window.localStorage.getItem('authUser');
+  const rawUser = window.sessionStorage.getItem('authUser');
 
   if (!rawUser) {
     return null;
@@ -68,6 +60,14 @@ export function getCurrentUser() {
   return readStoredUser();
 }
 
+export function getAuthToken() {
+  return window.sessionStorage.getItem('authToken');
+}
+
+export function isAuthenticated() {
+  return Boolean(getAuthToken() && getCurrentUser());
+}
+
 export function getCurrentUserDisplay() {
   const user = getCurrentUser();
   const fullName = user?.name || user?.nome || user?.username || 'Ana Camolesi';
@@ -102,7 +102,7 @@ export function getCurrentUserProfile() {
   const user = getCurrentUser();
 
   if (!user) {
-    return 'agent';
+    return null;
   }
 
   if (user.accessStatus === 'unassigned') {
@@ -119,17 +119,12 @@ export function getCurrentUserProfile() {
     return backendProfile;
   }
 
-  const username = String(user.username || user.email || user.name || '').trim().toLowerCase();
-  const demoProfile = DEMO_PROFILE_BY_USERNAME[username];
-
-  if (demoProfile) {
-    return demoProfile;
-  }
-
   return 'agent';
 }
 
 export function clearSession() {
+  window.sessionStorage.removeItem('authToken');
+  window.sessionStorage.removeItem('authUser');
   window.localStorage.removeItem('authToken');
   window.localStorage.removeItem('authUser');
 }
diff --git a/src/modules/management/pages/WhatsappAdminPage.jsx b/src/modules/management/pages/WhatsappAdminPage.jsx
index 6f252d6..3ca98cb 100644
--- a/src/modules/management/pages/WhatsappAdminPage.jsx
+++ b/src/modules/management/pages/WhatsappAdminPage.jsx
@@ -1,14 +1,18 @@
 import React, { useEffect, useState } from 'react';
 import { io } from 'socket.io-client';
 import { API_BASE_URL, WHATSAPP_SOCKET_URL } from '../../../shared/services/apiConfig';
+import { getAuthToken } from '../../auth/services/sessionService';
 
 export const WhatsappAdminPage = () => {
   const [qrCode, setQrCode] = useState(null);
   const [status, setStatus] = useState('DISCONNECTED');
 
   useEffect(() => {
-    // Conecta ao namespace /whatsapp
-    const socket = io(WHATSAPP_SOCKET_URL);
+    const socket = io(WHATSAPP_SOCKET_URL, {
+      auth: {
+        token: getAuthToken(),
+      },
+    });
 
     socket.on('connect', () => {
       console.log('Connected to WhatsApp WebSocket');
@@ -38,10 +42,13 @@ export const WhatsappAdminPage = () => {
   return (
     <div className="p-8">
       <h1 className="text-2xl font-bold mb-4">Configuração do WhatsApp</h1>
-      
+
       <div className="bg-white p-6 rounded-lg shadow-md max-w-md">
-        <h2 className="text-lg font-semibold mb-2">Status da Conexão: <span className={status === 'CONNECTED' ? 'text-green-600' : 'text-red-600'}>{status}</span></h2>
-        
+        <h2 className="text-lg font-semibold mb-2">
+          Status da Conexão:{' '}
+          <span className={status === 'CONNECTED' ? 'text-green-600' : 'text-red-600'}>{status}</span>
+        </h2>
+
         {status === 'AWAITING_QR' && qrCode && (
           <div className="mt-4 flex flex-col items-center">
             <p className="mb-2 text-gray-600">Escaneie o QR Code abaixo com seu WhatsApp:</p>
diff --git a/src/routes/ProtectedRoute.jsx b/src/routes/ProtectedRoute.jsx
new file mode 100644
index 0000000..4043c8d
--- /dev/null
+++ b/src/routes/ProtectedRoute.jsx
@@ -0,0 +1,10 @@
+import { Navigate } from 'react-router-dom';
+import { isAuthenticated } from '../modules/auth/services/sessionService';
+
+export function ProtectedRoute({ children }) {
+  if (!isAuthenticated()) {
+    return <Navigate to="/login" replace />;
+  }
+
+  return children;
+}
diff --git a/src/routes/router.jsx b/src/routes/router.jsx
index 12c3a6f..8a9efda 100644
--- a/src/routes/router.jsx
+++ b/src/routes/router.jsx
@@ -7,6 +7,11 @@ import { ChatPage } from '../modules/chat/pages/ChatPage';
 import { CallPage } from '../modules/call/pages/CallPage';
 import { AgentNewAttendancePage } from '../modules/attendance/pages/AgentNewAttendancePage';
 import { WhatsappAdminPage } from '../modules/management/pages/WhatsappAdminPage';
+import { ProtectedRoute } from './ProtectedRoute';
+
+function privatePage(page) {
+  return <ProtectedRoute>{page}</ProtectedRoute>;
+}
 
 export const router = createBrowserRouter([
   {
@@ -19,30 +24,30 @@ export const router = createBrowserRouter([
   },
   {
     path: '/home',
-    element: <ProfileHomePage />,
+    element: privatePage(<ProfileHomePage />),
   },
   {
     path: '/chat',
-    element: <ChatPage />,
+    element: privatePage(<ChatPage />),
   },
   {
     path: '/call',
-    element: <CallPage />,
+    element: privatePage(<CallPage />),
   },
   {
     path: '/new-attendance',
-    element: <AgentNewAttendancePage />,
+    element: privatePage(<AgentNewAttendancePage />),
   },
   {
     path: '/mass-message',
-    element: <AgentMassMessagePage />,
+    element: privatePage(<AgentMassMessagePage />),
   },
   {
     path: '/contacts',
-    element: <ContactsPage />,
+    element: privatePage(<ContactsPage />),
   },
   {
     path: '/admin/whatsapp',
-    element: <WhatsappAdminPage />,
+    element: privatePage(<WhatsappAdminPage />),
   },
 ]);
diff --git a/src/shared/hooks/useWhatsappSocket.js b/src/shared/hooks/useWhatsappSocket.js
index 462011f..e483a7c 100644
--- a/src/shared/hooks/useWhatsappSocket.js
+++ b/src/shared/hooks/useWhatsappSocket.js
@@ -1,6 +1,7 @@
 import { useEffect, useState, useRef } from 'react';
 import io from 'socket.io-client';
 import { API_BASE_URL, WHATSAPP_SOCKET_URL } from '../services/apiConfig';
+import { getAuthToken } from '../../modules/auth/services/sessionService';
 
 export function useWhatsappSocket() {
   const [socket, setSocket] = useState(null);
@@ -15,6 +16,9 @@ export function useWhatsappSocket() {
     // Conectar ao namespace /whatsapp
     const newSocket = io(WHATSAPP_SOCKET_URL, {
       reconnectionAttempts: 5,
+      auth: {
+        token: getAuthToken(),
+      },
     });
     
     socketRef.current = newSocket;
diff --git a/src/shared/services/authFetch.js b/src/shared/services/authFetch.js
new file mode 100644
index 0000000..fb1e149
--- /dev/null
+++ b/src/shared/services/authFetch.js
@@ -0,0 +1,35 @@
+import { API_BASE_URL } from './apiConfig';
+
+function getStoredToken() {
+  return window.sessionStorage.getItem('authToken');
+}
+
+function shouldAttachToken(resource) {
+  const url = typeof resource === 'string' ? resource : resource?.url;
+
+  return Boolean(url && url.startsWith(API_BASE_URL) && getStoredToken());
+}
+
+export function installAuthFetchInterceptor() {
+  window.localStorage.removeItem('authToken');
+  window.localStorage.removeItem('authUser');
+
+  const nativeFetch = window.fetch.bind(window);
+
+  window.fetch = (resource, options = {}) => {
+    if (!shouldAttachToken(resource)) {
+      return nativeFetch(resource, options);
+    }
+
+    const headers = new Headers(options.headers || {});
+
+    if (!headers.has('Authorization')) {
+      headers.set('Authorization', `Bearer ${getStoredToken()}`);
+    }
+
+    return nativeFetch(resource, {
+      ...options,
+      headers,
+    });
+  };
+}