Update security string to 2015-12-01 am: 0f1512bc03 am: 7b4c7fe5b7 am: 5e994e0d9c
am: dca5dd4f79

* commit 'dca5dd4f795d6f47591370c1ad27d45b2432b208':
  Update security string to 2015-12-01