This is the easiest and quickest way for a burglar to enter your home. What should you do?
Here are two inexpensive suggestions. Number one; Reinforce the door jam. As shown in photo 2, the original two plates were replaced by the one piece plate which is anchored with six 4 inch wood screws to the wall stud.
Number two; Reinforce the door itself by adding a U-shaped piece of metal around the dead bolt. (Photo 3)
The parts are available at home improvement stores. These improvements are not indestructible but it will certainly take a very heavy hit to break in.