diff --git a/src/backend/src/Controller/AuthController.php b/src/backend/src/Controller/AuthController.php
index 602c203..98aaf38 100644
--- a/src/backend/src/Controller/AuthController.php
+++ b/src/backend/src/Controller/AuthController.php
@@ -6,12 +6,9 @@ use App\Entity\User;
 use App\Traits\JsonResponseTrait;
 use App\Repository\UserRepository;
 use Symfony\Component\HttpFoundation\Request;
-use Symfony\Component\HttpFoundation\Response;
 use Symfony\Component\Routing\Annotation\Route;
-use Symfony\Component\HttpFoundation\JsonResponse;
-use Symfony\Component\Security\Core\User\UserInterface;
 use Symfony\Bundle\FrameworkBundle\Controller\AbstractController;
-use Symfony\Component\Security\Core\Encoder\UserPasswordEncoderInterface;
+use Symfony\Component\PasswordHasher\Hasher\UserPasswordHasherInterface;
 use Lexik\Bundle\JWTAuthenticationBundle\Services\JWTTokenManagerInterface;
 
 class AuthController extends AbstractController
@@ -23,7 +20,7 @@ class AuthController extends AbstractController
     }
 
     #[Route('/api/register', methods: ["POST"], name: 'register')]
-    public function register(Request $request, UserPasswordEncoderInterface $encoder)
+    public function register(Request $request, UserPasswordHasherInterface $encoder)
     {
         $em = $this->getDoctrine()->getManager();
         $name = $request->get('name');
@@ -41,7 +38,7 @@ class AuthController extends AbstractController
         }
 
         $user = new User();
-        $user->setPassword($encoder->encodePassword($user, $password));
+        $user->setPassword($encoder->hashPassword($user, $password));
         $user->setEmail($email);
         $user->setName($name);
         $user->setSurname($surname);
@@ -50,9 +47,20 @@ class AuthController extends AbstractController
         return $this->created($user);
     }
 
-    #[Route('/api/login', methods: ["POST"], name: 'login')]
-    public function login(Request $request, JWTTokenManagerInterface $JWTManager)
+    #[Route('/api/login', methods: ['POST'], name: 'login')]
+    public function login(JWTTokenManagerInterface $JWTManager)
     {
+        $user = new User();
         return $this->ok(['token' => $JWTManager->create($user)]);
     }
-}
\ No newline at end of file
+
+    #[Route('/api/user-check', methods: ['POST'])]
+    public function checkUser() {
+        $user = $this->getUser();
+        if (!$user) {
+            return $this->unauthorized([]);
+        }
+        $user->generateAvatar();
+        return $this->ok($user);
+    }
+}
diff --git a/src/backend/src/Entity/User.php b/src/backend/src/Entity/User.php
index 1abda34..9046569 100644
--- a/src/backend/src/Entity/User.php
+++ b/src/backend/src/Entity/User.php
@@ -6,13 +6,14 @@ use Doctrine\ORM\Mapping as ORM;
 use App\Repository\UserRepository;
 use App\Entity\Abstraction\BaseEntity;
 use Symfony\Component\Security\Core\User\UserInterface;
+use Lexik\Bundle\JWTAuthenticationBundle\Security\User\JWTUserInterface;
 use Symfony\Component\Security\Core\User\PasswordAuthenticatedUserInterface;
 
 /**
  * @ORM\Entity(repositoryClass=UserRepository::class)
  * @ORM\Table(name="`user`")
  */
-class User extends BaseEntity implements UserInterface, PasswordAuthenticatedUserInterface
+class User extends BaseEntity implements UserInterface, PasswordAuthenticatedUserInterface, JWTUserInterface
 {
     protected array $hidden = ['password', 'salt', 'userIdentifier', 'username'];
 
@@ -64,6 +65,12 @@ class User extends BaseEntity implements UserInterface, PasswordAuthenticatedUse
      */
     private $state;
 
+    public static function createFromPayload($username, array $payload)
+    {
+        $user = new User();
+        return $user;
+    }
+
     public function getId(): ?string
     {
         return $this->id;
@@ -219,4 +226,10 @@ class User extends BaseEntity implements UserInterface, PasswordAuthenticatedUse
 
         return $this;
     }
+
+    public function generateAvatar() {
+        if (!$this->avatar) {
+            $this->avatar = 'https://www.gravatar.com/avatar/' . md5($this->email) . '?s=514&d=robohash';
+        }
+    }
 }
diff --git a/src/backend/src/Traits/JsonResponseTrait.php b/src/backend/src/Traits/JsonResponseTrait.php
index 57751c9..05d03d1 100644
--- a/src/backend/src/Traits/JsonResponseTrait.php
+++ b/src/backend/src/Traits/JsonResponseTrait.php
@@ -20,6 +20,10 @@ trait JsonResponseTrait {
         return $this->response([ 'error' => 'Not acceptable', 'data' => $data], $code, $headers);
     }
 
+    protected function unauthorized($data, $code = Response::HTTP_UNAUTHORIZED, $headers = []) {
+        return $this->response([ 'error' => 'Unauthorized', 'data' => $data], $code, $headers);
+    }
+
     protected function response($data, $code = Response::HTTP_OK, $headers = []) {
 
         if ($data instanceof BaseEntity) {
diff --git a/src/frontend/src/app/app.component.html b/src/frontend/src/app/app.component.html
index aa96be6..93df4d0 100644
--- a/src/frontend/src/app/app.component.html
+++ b/src/frontend/src/app/app.component.html
@@ -34,10 +34,9 @@
                         </div>
                     </ng-container>
                 </ng-container>
-
             </div>
             <div>
-                <div class="d-flex user-box">
+                <div class="d-flex user-box" *ngIf="user">
                     <div class="avatar" [style.background-image]="url(user.avatar)"></div>
                     <div class="d-flex align-items-center flex-grow-1 p-2">{{ user.name }} {{ user.surname }}</div>
                     <div class="user-menu-container">
@@ -53,7 +52,7 @@
                                     <mat-option *ngFor="let lang of langs" [value]="lang">{{ 'LANGUAGE.'+lang.toUpperCase() | translate }}</mat-option>
                                 </mat-select>
                             </mat-form-field>
-            
+
                             <mat-form-field class="w-100 px-3">
                                 <mat-label>{{ 'APP.THEME' | translate }}</mat-label>
                                 <mat-select [formControl]="themeControl">
@@ -66,11 +65,10 @@
                         </mat-menu>
                     </div>
                 </div>
-
             </div>
         </div>
     </mat-drawer>
-  
+
     <ng-container *ngIf="isMobile">
         <ng-container *ngTemplateOutlet="toolbar"></ng-container>
     </ng-container>
diff --git a/src/frontend/src/app/app.component.ts b/src/frontend/src/app/app.component.ts
index 8a8b21f..87aea82 100644
--- a/src/frontend/src/app/app.component.ts
+++ b/src/frontend/src/app/app.component.ts
@@ -7,12 +7,14 @@ import { ThemeService } from './modules/shared/services/theme/theme.service';
 import { DomSanitizer, SafeStyle } from '@angular/platform-browser';
 import { AuthService } from './modules/auth/services/auth/auth.service';
 import { Router } from '@angular/router';
+import { UserModel } from './modules/auth/models/user.model';
 
 enum SidebarOpenEnum {
   Default,
   Open,
   Closed,
 }
+
 @Component({
   selector: 'app-root',
   templateUrl: './app.component.html',
@@ -31,11 +33,7 @@ export class AppComponent {
   themeControl = new FormControl();
   langControl = new FormControl();
   appRoutes = appRoutes;
-  user = {
-      name: 'Name',
-      surname: 'Surname',
-      avatar: 'https://www.gravatar.com/avatar/81b206a89f89d5b1123b87606075c6a8?s=514&d=robohash',
-  };
+  user: UserModel;
   isSidebarHidden = false;
   dynamicToolbarComponents = [];
 
@@ -43,13 +41,10 @@ export class AppComponent {
     switch (this.sidebarOpen) {
       case SidebarOpenEnum.Open:
         return true;
-        break;
       case SidebarOpenEnum.Closed:
         return false;
-        break;
       default:
         return this.defaultSidebarOpen;
-        break;
     }
   }
 
@@ -65,6 +60,14 @@ export class AppComponent {
     this.configureThemeEvents();
     this.configureLanguageEvents();
     this.configureResizeEvents();
+    this.configureUserEvents();
+  }
+
+  configureUserEvents() {
+    this.user = this.authService.getUser();
+    this.authService.userChange.subscribe(user => {
+        this.user = user;
+    });
   }
 
   configureSidebarEvents() {
diff --git a/src/frontend/src/app/modules/auth/components/auth/auth.component.scss b/src/frontend/src/app/modules/auth/components/auth/auth.component.scss
index 4e2de62..be1a28c 100644
--- a/src/frontend/src/app/modules/auth/components/auth/auth.component.scss
+++ b/src/frontend/src/app/modules/auth/components/auth/auth.component.scss
@@ -6,5 +6,4 @@
     margin: 0px auto;
     margin-top: -150px;
     height: 200px;
-    border-radius: 6px;
 }
\ No newline at end of file
diff --git a/src/frontend/src/app/modules/auth/services/auth/auth.service.ts b/src/frontend/src/app/modules/auth/services/auth/auth.service.ts
index f3e2bf4..8d32a41 100644
--- a/src/frontend/src/app/modules/auth/services/auth/auth.service.ts
+++ b/src/frontend/src/app/modules/auth/services/auth/auth.service.ts
@@ -1,19 +1,47 @@
 import { HttpClient } from '@angular/common/http';
 import { Injectable } from '@angular/core';
 import { Observable, Subject } from 'rxjs';
-import { BrowserStorageService } from 'src/app/modules/shared/services/browser-storage/browser-storage.service';
 import { LoginModel } from '../../models/login.model';
 import { RegisterModel } from '../../models/register.model';
 import { TokenResponse } from '../../models/token.response';
 import { UserModel } from '../../models/user.model';
 import { AuthTokenService } from '../../../shared/services/auth/auth-token.service';
+import { Router } from '@angular/router';
 
 @Injectable()
 export class AuthService {
+
+    private static updateAgent: any;
+    private user: UserModel;
+    public userChange = new Subject<UserModel>();
+
     constructor(
         private http: HttpClient,
         private authTokenService: AuthTokenService,
-        ) {
+        private router: Router,
+    ) {
+        this.checkUser();
+        this.userChange.subscribe(user => {
+            this.user = user;
+        });
+    }
+
+    getUser(): UserModel {
+        return this.user;
+    }
+
+    checkUser() {
+        this.http.post<UserModel>('/api/user-check', {}).subscribe(user => {
+            this.userChange.next(user);
+            if (AuthService.updateAgent) {
+                clearTimeout(AuthService.updateAgent);
+            }
+            AuthService.updateAgent = setTimeout(() => {
+                this.checkUser();
+            }, 2000) as any;
+        }, () => {
+            this.logout();
+        });
     }
 
     createAccount(data: RegisterModel): Observable<UserModel> {
@@ -27,6 +55,7 @@ export class AuthService {
             password: data.password,
         }).subscribe(data => {
             this.authTokenService.setToken(data.token);
+            this.checkUser();
             out.next(data);
         });
         return out;
@@ -34,5 +63,6 @@ export class AuthService {
 
     logout() {
         this.authTokenService.removeToken();
+        this.router.navigate(['/auth']);
     }
 }
diff --git a/src/frontend/src/app/modules/shared/components/not-found/not-found.component.html b/src/frontend/src/app/modules/shared/components/not-found/not-found.component.html
index a8a991b..017680c 100644
--- a/src/frontend/src/app/modules/shared/components/not-found/not-found.component.html
+++ b/src/frontend/src/app/modules/shared/components/not-found/not-found.component.html
@@ -1,3 +1,10 @@
-<div class="m-3 p-3">
-    {{ 'ERROR.PAGE_NOT_FOUND' | translate }}
-</div>
\ No newline at end of file
+<div class="primary-background toolbar-background"></div>
+<div class="content align-items-center justify-content-center">
+    <div class="col-11 col-lg-7 col-xl-5">
+        <mat-card>
+            <div class="m-3 p-3">
+                {{ 'ERROR.PAGE_NOT_FOUND' | translate }}
+            </div>
+        </mat-card>
+    </div>
+</div>
diff --git a/src/frontend/src/app/modules/shared/components/not-found/not-found.component.scss b/src/frontend/src/app/modules/shared/components/not-found/not-found.component.scss
index e69de29..3b40699 100644
--- a/src/frontend/src/app/modules/shared/components/not-found/not-found.component.scss
+++ b/src/frontend/src/app/modules/shared/components/not-found/not-found.component.scss
@@ -0,0 +1,10 @@
+.primary-background{
+    background-color: var(--toolbar-background);
+    height: 100px;
+}
+.content{
+    margin: 0px auto;
+    margin-top: -100px;
+    height: 200px;
+    display: flex;
+}
\ No newline at end of file
diff --git a/src/frontend/src/app/modules/shared/models/user.model.ts b/src/frontend/src/app/modules/shared/models/user.model.ts
new file mode 100644
index 0000000..7ed8173
--- /dev/null
+++ b/src/frontend/src/app/modules/shared/models/user.model.ts
@@ -0,0 +1,9 @@
+export class User {
+    id: number;
+    email: string;
+    name: string;
+    surname: string;
+    avatar: string;
+    country: string;
+    state: string;
+}
\ No newline at end of file
diff --git a/src/frontend/src/app/modules/shared/shared.module.ts b/src/frontend/src/app/modules/shared/shared.module.ts
index 344df7e..97bf26b 100644
--- a/src/frontend/src/app/modules/shared/shared.module.ts
+++ b/src/frontend/src/app/modules/shared/shared.module.ts
@@ -4,6 +4,7 @@ import { NotFoundComponent } from './components/not-found/not-found.component';
 import { TranslateLoader, TranslateModule } from '@ngx-translate/core';
 import { HttpLoaderFactory } from 'src/app/app.module';
 import { HttpClient } from '@angular/common/http';
+import { MaterialModule } from '../material/material.module';
 
 @NgModule({
   declarations: [
@@ -11,6 +12,7 @@ import { HttpClient } from '@angular/common/http';
   ],
   imports: [
     CommonModule,
+    MaterialModule,
     TranslateModule.forRoot({
         defaultLanguage: 'en',
         loader: {