The security of our residential and commercial space is our responsibility. And the most basic form of security is none other than our door locks. They are the mainline of defense for your property and it is necessary to have a quality lock system on the exterior doors. With that in mind, it’s also important not to neglect maintenance and updating on your locks. While door locks aren’t something that you’ll likely have to change very often, some unusual situations indicate such an update. Read on to learn those situations that indicate that you need to change your door locks.