Here are some best Security Apps that will help you to protect your Android.
#1 [Smart Phone Lock] Best lockscreen replacement app
#2. [Smart applock] Lock apps and system setting
#3. [Anti alarm theft] Ring Alarm when someone touch your phone
#4 [Airdroid] Control your Android from smartphone. Root require
#5. [LockWatch] / [cerberus] Find your lost or stolen smartphone