One of the most famous software defects - Therac 25 - happened because of a transfer of medium. The software was embodied in a machine with physical controls, t

One of the most famous software defects - Therac 25 - happened because of a transfer of medium. The software was embodied in a machine with physical controls, then the software was embodied in a machine with software controls only. The assumptions in each medium were very different. I wonder if something similar happened here. I imagine the requirements document didn't say anything about the public internet.