TexasCHLforum.com

The majority of home break-ins are done via kicking the door down. It's very simple to do on most doors.

Many companies make products to prevent it but this is just one example:

http://www.invasionproof.com/

It's very easy to install and makes your door virtually impossible to kick in without a lot of effort.

At the very least it's usually suggested to replace the screws on your plates with something long enough that they'll reach the studs. The above type is a much better solution, though.