Default Anyone working on privacy or security oriented roms?

i am just on a fishing expedition here so please bear with me. I am interested in a rom that is geared towards privacy or security based on android. With all of the id theft and government hanky panky i have started researching this subject but the only thing definitive i have found is the "blackphone". I would prefer something a little less proprietary and more open source.
If you know of a project or can suggest any apps that could aid in my quest (privacy, encryption, etc) please let me know.