Wipe data on wrong password inputs
You might want to take a look at Autowipe for that:

Use Autowipe to automatically and PERMANENTLY WIPE your internal and external data by doing a factory reset. Enterprise and business users should find this useful! This is meant to be used in case your device gets stolen, misplaced, or lost.
Automatically wipes for: failed passwords to unlock screen, SMS password received, subscriber ID changed (SIM card). Use the new integrated test mode to test all these cases. Locks the screen while wiping.

The app does not require root, according to its Playstore description.

(click to enlarge)