Update security string to 2015-12-01 - DO NOT MERGE am: 6575d4a2a8 am: cc9ac27157 am: fe64ce145e  -s ours am: 0e8cf97670 am: 07e2c19536 am: a3b35dec78
am: 3c407e4573

* commit '3c407e457391816eea27e847e9f8d3da9383256a':
  Update security string to 2015-12-01 - DO NOT MERGE