Comment bundle program with os... (Score 1) 500
Bundle program with os (so it's installed on every computer) and use encrypted distributed storage (there are some projects out there) as virtual hard disk.
Connect to that disk manually on every computer startup so there are no traces in init.d/autoexec.bat.
I was thinking about using the unused parts of the harddisk but the encrypted data bits should be really random while your deleted jpegs aren't so it would be
very easy to detect....