Abstract: The present disclosure relates to an improved system and method for reinforcing a door jamb so as to decrease the risk of a break-in through a door. In particular, the present disclosure describes at least two reinforcement plates that are positioned within the door jamb and a wall adjacent to the door. One reinforcement plate is positioned within the door jamb such that a latch of a doorknob and, optionally, a latch of a deadbolt, may be secured therein when the door is closed. A second reinforcement plate is positioned within the wall and disposed perpendicularly to the first reinforcement plate such that the second plate provides a reaction force against the first plate when an impact force is applied to the door. The present disclosure also describes various novel methods for reinforcing a door jamb.