diff --git a/endpoints/api/test/shared.py b/endpoints/api/test/shared.py
index 110f1044c..5b9c2f090 100644
--- a/endpoints/api/test/shared.py
+++ b/endpoints/api/test/shared.py
@@ -13,12 +13,13 @@ CSRF_TOKEN = '123csrfforme'
 @contextmanager
 def client_with_identity(auth_username, client):
   with client.session_transaction() as sess:
-    if auth_username:
-      if auth_username is not None:
-        loaded = model.user.get_user(auth_username)
-        sess['user_id'] = loaded.uuid
-        sess['login_time'] = datetime.datetime.now()
-        sess[CSRF_TOKEN_KEY] = CSRF_TOKEN
+    if auth_username and auth_username is not None:
+      loaded = model.user.get_user(auth_username)
+      sess['user_id'] = loaded.uuid
+      sess['login_time'] = datetime.datetime.now()
+      sess[CSRF_TOKEN_KEY] = CSRF_TOKEN
+    else:
+      sess['user_id'] = 'anonymous'
 
   yield client
 
diff --git a/endpoints/appr/registry.py b/endpoints/appr/registry.py
index d09b3a823..00401813b 100644
--- a/endpoints/appr/registry.py
+++ b/endpoints/appr/registry.py
@@ -181,11 +181,9 @@ def push(namespace, package_name):
     logger.debug('Found invalid repository name CNR push: %s', reponame)
     raise InvalidUsage()
 
-  values = request.get_json(force=True, silent=True)
-  release_version = values['release']
-  media_type = values['media_type']
-  force = request.args.get('force', 'false') == 'true'
+  values = request.get_json(force=True, silent=True) or {}
   private = values.get('visibility', 'public')
+
   owner = get_authenticated_user()
   if not Package.exists(reponame):
     if not CreateRepositoryPermission(namespace).can():
@@ -198,6 +196,13 @@ def push(namespace, package_name):
     raise UnauthorizedAccess("Unauthorized access for: %s" % reponame,
                              {"package": reponame, "scopes": ['push']})
 
+  if not 'release' in values:
+    raise InvalidUsage('Missing release')
+
+  release_version = values['release']
+  media_type = values['media_type']
+  force = request.args.get('force', 'false') == 'true'
+
   blob = Blob(reponame, values['blob'])
   app_release = cnr_registry.push(reponame, release_version, media_type, blob, force,
                                   package_class=Package, user=owner, visibility=private)
diff --git a/endpoints/appr/test/test_api_security.py b/endpoints/appr/test/test_api_security.py
new file mode 100644
index 000000000..ea7e11dee
--- /dev/null
+++ b/endpoints/appr/test/test_api_security.py
@@ -0,0 +1,66 @@
+import base64
+import pytest
+
+from flask import url_for
+
+from data import model
+from endpoints.test.fixtures import app, appconfig, database_uri, init_db_path, sqlitedb_file
+from endpoints.appr.registry import appr_bp, blobs
+from endpoints.api.test.shared import client_with_identity
+
+@pytest.mark.parametrize('resource,method,params,owned_by,identity,expected', [
+  ('appr.blobs', 'GET', {'digest': 'abcd1235'}, 'devtable', 'public', 401),
+  ('appr.blobs', 'GET', {'digest': 'abcd1235'}, 'devtable', 'devtable', 404),
+
+  ('appr.delete_package', 'DELETE', {'release': 'r', 'media_type': 'foo'}, 'devtable', 'public', 401),
+  ('appr.delete_package', 'DELETE', {'release': 'r', 'media_type': 'foo'}, 'devtable', 'devtable', 404),
+
+  ('appr.show_package', 'GET', {'release': 'r', 'media_type': 'foo'}, 'devtable', 'public', 401),
+  ('appr.show_package', 'GET', {'release': 'r', 'media_type': 'foo'}, 'devtable', 'devtable', 404),
+
+  ('appr.show_package_releases', 'GET', {}, 'devtable', 'public', 401),
+  ('appr.show_package_releases', 'GET', {}, 'devtable', 'devtable', 200),
+
+  ('appr.show_package_releasse_manifests', 'GET', {'release': 'r'}, 'devtable', 'public', 401),
+  ('appr.show_package_releasse_manifests', 'GET', {'release': 'r'}, 'devtable', 'devtable', 200),
+
+  ('appr.pull', 'GET', {'release': 'r', 'media_type': 'foo'}, 'devtable', 'public', 401),
+  ('appr.pull', 'GET', {'release': 'r', 'media_type': 'foo'}, 'devtable', 'devtable', 404),
+
+  ('appr.push', 'POST', {}, 'devtable', 'public', 401),
+  ('appr.push', 'POST', {}, 'devtable', 'devtable', 400),
+
+  ('appr.list_channels', 'GET', {}, 'devtable', 'public', 401),
+  ('appr.list_channels', 'GET', {}, 'devtable', 'devtable', 200),
+
+  ('appr.show_channel', 'GET', {'channel_name': 'c'}, 'devtable', 'public', 401),
+  ('appr.show_channel', 'GET', {'channel_name': 'c'}, 'devtable', 'devtable', 404),
+
+  ('appr.delete_channel', 'DELETE', {'channel_name': 'c'}, 'devtable', 'public', 401),
+  ('appr.delete_channel', 'DELETE', {'channel_name': 'c'}, 'devtable', 'devtable', 404),
+
+  ('appr.add_channel_release', 'POST', {'channel_name': 'c', 'release': 'r'}, 'devtable', 'public', 401),
+  ('appr.add_channel_release', 'POST', {'channel_name': 'c', 'release': 'r'}, 'devtable', 'devtable', 404),
+
+  ('appr.delete_channel_release', 'DELETE', {'channel_name': 'c', 'release': 'r'}, 'devtable', 'public', 401),
+  ('appr.delete_channel_release', 'DELETE', {'channel_name': 'c', 'release': 'r'}, 'devtable', 'devtable', 404),
+])
+def test_api_security(resource, method, params, owned_by, identity, expected, app, client):
+  app.register_blueprint(appr_bp, url_prefix='/cnr')
+
+  with client_with_identity(identity, client) as cl:
+    owner = model.user.get_user(owned_by)
+    model.repository.create_repository(owned_by, 'someapprepo', owner, repo_kind='application')
+
+    params['namespace'] = owned_by
+    params['package_name'] = 'someapprepo'
+    params['_csrf_token'] = '123csrfforme'
+
+    url = url_for(resource, **params)
+    headers = {}
+    if identity is not None:
+      headers['authorization'] = 'basic ' + base64.b64encode('%s:password' % identity)
+
+    rv = cl.open(url, headers=headers, method=method)
+    assert rv.status_code == expected
+