For example TrueCrypt and GnuPG are Open Source and not broken yet.
The other exampels are Punkbuster / Digital Rights Management or any copy protection. All those examples are based uppon Closed Source and closed protocols. Also Security by Obscurity / Security by Obsfucation. Next commonness, most of them got tricked already.
Isn`t it possible to make those kinds of programs also professional, Open Source and uncrackable at least for a long while?