cherrypick from klp-docs docs: security consideration for Android <4.2 Change-Id: I5fe51641539f7ffe7abcdb0618371dd3f4b62ab5
cherrypick from klp-docs docs: security consideration for Android <4.2 Change-Id: I5fe51641539f7ffe7abcdb0618371dd3f4b62ab5

Change-Id: I9838519ad3e0c2fb3957829fc448b1ae6bd1d62b

xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base