diff --git a/src/Symfony/Component/Security/Core/Exception/AuthenticationExpiredException.php b/src/Symfony/Component/Security/Core/Exception/AuthenticationExpiredException.php
new file mode 100644
index 0000000000..caf2e6cc38
--- /dev/null
+++ b/src/Symfony/Component/Security/Core/Exception/AuthenticationExpiredException.php
@@ -0,0 +1,31 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\Security\Core\Exception;
+
+/**
+ * AuthenticationServiceException is thrown when an authenticated token becomes un-authentcated between requests.
+ *
+ * In practice, this is due to the User changing between requests (e.g. password changes),
+ * causes the token to become un-authenticated.
+ *
+ * @author Ryan Weaver <ryan@knpuniversity.com>
+ */
+class AuthenticationExpiredException extends AccountStatusException
+{
+    /**
+     * {@inheritdoc}
+     */
+    public function getMessageKey()
+    {
+        return 'Authentication expired because your account information has changed.';
+    }
+}
diff --git a/src/Symfony/Component/Security/Guard/Provider/GuardAuthenticationProvider.php b/src/Symfony/Component/Security/Guard/Provider/GuardAuthenticationProvider.php
index 646eea9b59..2a58085bae 100644
--- a/src/Symfony/Component/Security/Guard/Provider/GuardAuthenticationProvider.php
+++ b/src/Symfony/Component/Security/Guard/Provider/GuardAuthenticationProvider.php
@@ -21,6 +21,7 @@ use Symfony\Component\Security\Core\User\UserCheckerInterface;
 use Symfony\Component\Security\Core\User\UserInterface;
 use Symfony\Component\Security\Core\User\UserProviderInterface;
 use Symfony\Component\Security\Core\Authentication\Token\TokenInterface;
+use Symfony\Component\Security\Core\Exception\AuthenticationExpiredException;
 
 /**
  * Responsible for accepting the PreAuthenticationGuardToken and calling
@@ -81,8 +82,8 @@ class GuardAuthenticationProvider implements AuthenticationProviderInterface
                 return $token;
             }
 
-            // cause the logout - the token is not authenticated
-            return new AnonymousToken($this->providerKey, 'anon.');
+            // this AccountStatusException causes the user to be logged out
+            throw new AuthenticationExpiredException();
         }
 
         // find the *one* GuardAuthenticator that this token originated from
diff --git a/src/Symfony/Component/Security/Guard/Tests/Provider/GuardAuthenticationProviderTest.php b/src/Symfony/Component/Security/Guard/Tests/Provider/GuardAuthenticationProviderTest.php
index 24c946d0e1..3bc002b269 100644
--- a/src/Symfony/Component/Security/Guard/Tests/Provider/GuardAuthenticationProviderTest.php
+++ b/src/Symfony/Component/Security/Guard/Tests/Provider/GuardAuthenticationProviderTest.php
@@ -81,6 +81,9 @@ class GuardAuthenticationProviderTest extends \PHPUnit_Framework_TestCase
         $this->assertSame($authedToken, $actualAuthedToken);
     }
 
+    /**
+     * @expectedException \Symfony\Component\Security\Core\Exception\AuthenticationExpiredException
+     */
     public function testGuardWithNoLongerAuthenticatedTriggersLogout()
     {
         $providerKey = 'my_firewall_abc';
@@ -93,8 +96,6 @@ class GuardAuthenticationProviderTest extends \PHPUnit_Framework_TestCase
 
         $provider = new GuardAuthenticationProvider(array(), $this->userProvider, $providerKey, $this->userChecker);
         $actualToken = $provider->authenticate($token);
-        // this should return the anonymous user
-        $this->assertEquals(new AnonymousToken($providerKey, 'anon.'), $actualToken);
     }
 
     protected function setUp()