diff --git a/example/app.py b/example/app.py
index 38a8f0d..69e0b6e 100644
--- a/example/app.py
+++ b/example/app.py
@@ -149,8 +149,8 @@ def create_sqlalchemy_app(auth_config=None, register_blueprint=True):
         roles = db.relationship('Role', secondary=roles_users,
                                 backref=db.backref('users', lazy='dynamic'))
 
-    Security(app, SQLAlchemyUserDatastore(db, User, Role),
-             register_blueprint=register_blueprint)
+    app.security = Security(app, SQLAlchemyUserDatastore(db, User, Role),
+                            register_blueprint=register_blueprint)
 
     if not register_blueprint:
         from example import security
@@ -192,7 +192,7 @@ def create_mongoengine_app(auth_config=None):
         authentication_token = db.StringField(max_length=255)
         roles = db.ListField(db.ReferenceField(Role), default=[])
 
-    Security(app, MongoEngineUserDatastore(db, User, Role))
+    app.security = Security(app, MongoEngineUserDatastore(db, User, Role))
 
     @app.before_first_request
     def before_first_request():
diff --git a/flask_security/confirmable.py b/flask_security/confirmable.py
index 58ceff7..9c703a8 100644
--- a/flask_security/confirmable.py
+++ b/flask_security/confirmable.py
@@ -21,9 +21,9 @@ from .signals import user_confirmed, confirm_instructions_sent
 
 
 # Convenient references
-_security = LocalProxy(lambda: app.security)
+_security = LocalProxy(lambda: app.extensions['security'])
 
-_datastore = LocalProxy(lambda: app.security.datastore)
+_datastore = LocalProxy(lambda: _security.datastore)
 
 
 def send_confirmation_instructions(user, token):
diff --git a/flask_security/core.py b/flask_security/core.py
index 8050cc1..f4d8219 100644
--- a/flask_security/core.py
+++ b/flask_security/core.py
@@ -17,11 +17,15 @@ from flask.ext.principal import Principal, RoleNeed, UserNeed, Identity, \
      identity_loaded
 from passlib.context import CryptContext
 from werkzeug.datastructures import ImmutableList
+from werkzeug.local import LocalProxy
 
 from . import views, exceptions
 from .confirmable import requires_confirmation
 from .utils import config_value as cv, get_config
 
+# Convenient references
+_security = LocalProxy(lambda: current_app.extensions['security'])
+
 
 #: Default Flask-Security configuration
 _default_config = {
@@ -75,7 +79,7 @@ _default_flash_messages = {
 
 def _user_loader(user_id):
     try:
-        return current_app.security.datastore.with_id(user_id)
+        return _security.datastore.with_id(user_id)
     except Exception, e:
         current_app.logger.error('Error getting user: %s' % e)
         return None
@@ -83,7 +87,7 @@ def _user_loader(user_id):
 
 def _token_loader(token):
     try:
-        return current_app.security.datastore.find_user(remember_token=token)
+        return _security.datastore.find_user(remember_token=token)
     except Exception, e:
         current_app.logger.error('Error getting user: %s' % e)
         return None
@@ -189,6 +193,13 @@ class AnonymousUser(AnonymousUserBase):
         return False
 
 
+class _SecurityState(object):
+
+    def __init__(self, **kwargs):
+        for key, value in kwargs.items():
+            setattr(self, key.lower(), value)
+
+
 class Security(object):
     """The :class:`Security` class initializes the Flask-Security extension.
 
@@ -196,7 +207,11 @@ class Security(object):
     :param datastore: An instance of a user datastore.
     """
     def __init__(self, app=None, datastore=None, **kwargs):
-        self.init_app(app, datastore, **kwargs)
+        self.app = app
+        self.datastore = datastore
+
+        if app is not None and datastore is not None:
+            self.init_app(app, datastore, **kwargs)
 
     def init_app(self, app, datastore, register_blueprint=True):
         """Initializes the Flask-Security extension for the specified
@@ -205,8 +220,6 @@ class Security(object):
         :param app: The application.
         :param datastore: An instance of a user datastore.
         """
-        if app is None or datastore is None:
-            return
 
         for key, value in _default_config.items():
             app.config.setdefault('SECURITY_' + key, value)
@@ -214,18 +227,6 @@ class Security(object):
         for key, value in _default_flash_messages.items():
             app.config.setdefault('SECURITY_MSG_' + key, value)
 
-        self.datastore = datastore
-        self.auth_provider = AuthenticationProvider()
-        self.login_manager = _get_login_manager(app)
-        self.principal = _get_principal(app)
-        self.pwd_context = _get_pwd_context(app)
-        self.reset_serializer = _get_reset_serializer(app)
-        self.confirm_serializer = _get_confirm_serializer(app)
-        self.token_auth_serializer = _get_token_auth_serializer(app)
-
-        for key, value in get_config(app).items():
-            setattr(self, key.lower(), value)
-
         identity_loaded.connect_via(app)(_on_identity_loaded)
 
         if register_blueprint:
@@ -234,13 +235,30 @@ class Security(object):
                                         url_prefix=cv('URL_PREFIX', app=app))
             app.register_blueprint(bp)
 
-        app.security = self
+        if not hasattr(app, 'extensions'):
+            app.extensions = {}
+
+        kwargs = {}
+        for key, value in get_config(app).items():
+            kwargs[key.lower()] = value
+
+        app.extensions['security'] = _SecurityState(
+            app=app,
+            datastore=datastore,
+            auth_provider=AuthenticationProvider(),
+            login_manager=_get_login_manager(app),
+            principal=_get_principal(app),
+            pwd_context=_get_pwd_context(app),
+            reset_serializer=_get_reset_serializer(app),
+            confirm_serializer=_get_confirm_serializer(app),
+            token_auth_serializer=_get_token_auth_serializer(app),
+            **kwargs)
 
 
 class AuthenticationProvider(object):
     """The default authentication provider implementation."""
     def _get_user(self, username_or_email):
-        datastore = current_app.security.datastore
+        datastore = _security.datastore
 
         try:
             return datastore.find_user(email=username_or_email)
@@ -286,7 +304,7 @@ class AuthenticationProvider(object):
             raise exceptions.BadCredentialsError('Account requires confirmation')
 
         # compare passwords
-        if current_app.security.pwd_context.verify(password, user.password):
+        if _security.pwd_context.verify(password, user.password):
             return user
 
         # bad match
diff --git a/flask_security/datastore.py b/flask_security/datastore.py
index bd076f5..98d5213 100644
--- a/flask_security/datastore.py
+++ b/flask_security/datastore.py
@@ -10,9 +10,13 @@
 """
 
 from flask import current_app
+from werkzeug.local import LocalProxy
 
 from . import exceptions, utils
 
+# Convenient references
+_security = LocalProxy(lambda: current_app.extensions['security'])
+
 
 class UserDatastore(object):
     """Abstracted user datastore. Always extend this class and implement the
@@ -88,7 +92,7 @@ class UserDatastore(object):
         password = kwargs.get('password', None)
 
         kwargs.setdefault('active', True)
-        kwargs.setdefault('roles', current_app.security.default_roles)
+        kwargs.setdefault('roles', _security.default_roles)
 
         if email is None:
             raise exceptions.UserCreationError('Missing email argument')
@@ -105,8 +109,9 @@ class UserDatastore(object):
 
         kwargs['roles'] = roles
 
-        pwd_context = current_app.security.pwd_context
+        pwd_context = _security.pwd_context
         pw = kwargs['password']
+
         if not pwd_context.identify(pw):
             kwargs['password'] = pwd_context.encrypt(pw)
 
diff --git a/flask_security/decorators.py b/flask_security/decorators.py
index 5406e4f..93bfe8a 100644
--- a/flask_security/decorators.py
+++ b/flask_security/decorators.py
@@ -21,7 +21,7 @@ from .exceptions import UserNotFoundError
 
 
 # Convenient references
-_security = LocalProxy(lambda: current_app.security)
+_security = LocalProxy(lambda: current_app.extensions['security'])
 
 _logger = LocalProxy(lambda: current_app.logger)
 
diff --git a/flask_security/forms.py b/flask_security/forms.py
index 4be9bbe..9fab6f4 100644
--- a/flask_security/forms.py
+++ b/flask_security/forms.py
@@ -18,7 +18,7 @@ from .exceptions import UserNotFoundError
 
 
 # Convenient reference
-_datastore = LocalProxy(lambda: app.security.datastore)
+_datastore = LocalProxy(lambda: app.extensions['security'].datastore)
 
 
 def valid_user_email(form, field):
diff --git a/flask_security/recoverable.py b/flask_security/recoverable.py
index cebd57e..48fd1b5 100644
--- a/flask_security/recoverable.py
+++ b/flask_security/recoverable.py
@@ -20,9 +20,9 @@ from .utils import send_mail, get_max_age, md5, get_message
 
 
 # Convenient references
-_security = LocalProxy(lambda: app.security)
+_security = LocalProxy(lambda: app.extensions['security'])
 
-_datastore = LocalProxy(lambda: app.security.datastore)
+_datastore = LocalProxy(lambda: _security.datastore)
 
 
 def send_reset_password_instructions(user, reset_token):
diff --git a/flask_security/script.py b/flask_security/script.py
index 85b61f8..ca01c93 100644
--- a/flask_security/script.py
+++ b/flask_security/script.py
@@ -15,7 +15,7 @@ from werkzeug.local import LocalProxy
 from flask_security import views
 
 
-_datastore = LocalProxy(lambda: current_app.security.datastore)
+_datastore = LocalProxy(lambda: current_app.extensions['security'].datastore)
 
 
 def pprint(obj):
diff --git a/flask_security/tokens.py b/flask_security/tokens.py
index f6665f0..f896469 100644
--- a/flask_security/tokens.py
+++ b/flask_security/tokens.py
@@ -16,9 +16,9 @@ from .utils import md5
 
 
 # Convenient references
-_security = LocalProxy(lambda: app.security)
+_security = LocalProxy(lambda: app.extensions['security'])
 
-_datastore = LocalProxy(lambda: app.security.datastore)
+_datastore = LocalProxy(lambda: _security.datastore)
 
 
 def generate_authentication_token(user):
diff --git a/flask_security/utils.py b/flask_security/utils.py
index 62274ba..fdbcf39 100644
--- a/flask_security/utils.py
+++ b/flask_security/utils.py
@@ -17,10 +17,15 @@ from datetime import datetime, timedelta
 
 from flask import url_for, flash, current_app, request, session, render_template
 from flask.ext.login import make_secure_token
+from werkzeug.local import LocalProxy
 
 from .signals import user_registered, password_reset_requested
 
 
+# Convenient references
+_security = LocalProxy(lambda: current_app.extensions['security'])
+
+
 def md5(data):
     return hashlib.md5(data).hexdigest()
 
@@ -150,7 +155,7 @@ def send_mail(subject, recipient, template, context=None):
     context = context or {}
 
     msg = Message(subject,
-                  sender=current_app.security.email_sender,
+                  sender=_security.email_sender,
                   recipients=[recipient])
 
     base = 'security/email'
diff --git a/flask_security/views.py b/flask_security/views.py
index e9eb2ed..f1d534c 100644
--- a/flask_security/views.py
+++ b/flask_security/views.py
@@ -33,9 +33,9 @@ from flask_security.utils import get_url, get_post_login_redirect, do_flash, \
 
 
 # Convenient references
-_security = LocalProxy(lambda: app.security)
+_security = LocalProxy(lambda: app.extensions['security'])
 
-_datastore = LocalProxy(lambda: app.security.datastore)
+_datastore = LocalProxy(lambda: _security.datastore)
 
 _logger = LocalProxy(lambda: app.logger)
 
diff --git a/tests/functional_tests.py b/tests/functional_tests.py
index 7fa4fb1..87a51be 100644
--- a/tests/functional_tests.py
+++ b/tests/functional_tests.py
@@ -279,7 +279,7 @@ class ExpiredConfirmationTest(SecurityTest):
             self.assertIn(e, outbox[0].html)
             self.assertNotIn(token, outbox[0].html)
 
-            expire_text = self.app.security.confirm_email_within
+            expire_text = self.AUTH_CONFIG['SECURITY_CONFIRM_EMAIL_WITHIN']
             text = 'You did not confirm your account within %s' % expire_text
 
             self.assertIn(text, r.data)