There are several measures you can take to add more security to your exterior door. If burglary is a concern in your area, you may want to consider an exterior door design with smaller or fewer glass lites. Other things you might do are:
Use screws that penetrate deeper or all the way through the framing, allowing your door to lock and deadbolt more securely.
Use longer screws to secure the hinges.
Replace a hollow core door with a solid core door.
Use locks and deadbolts that can only be opened from the inside.
Add a barricade.