Abstract: Systems, methods and software that provide for watermarked executable software. A software program is processed to create a watermarked software program comprising a fingerprint of a system on which it is to run and its clock, loadable executables that each contain an embedded encryption/decryption algorithm, and an execution instance. A secure ID device contains a clock that updates initialization code used by the watermarked software program. A storage medium contains the watermarked software program from which it is loaded into executable memory of a system on which it executes. A processor of the system is used to initialize the watermarked software program using predetermined initialization parameters and the initialization code from the secure ID device and execute the watermarked software program. The watermarked software program executes an executable in a first software module, which executable comprises the embedded encryption/decryption algorithm and a first encryption key.