Thieves will always find a way with enough time and determination. In this particular scenario the thief took the quiet brute force attack with a crowbar, instead of loudly smashing out the glass. Good locks are only one pillar of home security! Good lighting, a doorbell / security camera, a good alarm company, and lastly a dog are all great additions to add along with a good SOLID CORE door to help prevent someone making quick work right past your deadbolt lock!