I think an interesting spin to put in front of students would be to show them unethical methods of gathering information, and challenge them to come up with legal and ethical alternatives.
For example, if you showed "Wall Street" with its use of insider & stolen information, and then challenged the students for other ways they could have arrived at the same conclusions, using signals and signposts, speculation, modern tools (Twitter etc.) I think that would be useful. As an exercise, you could put them into teams, have them do a presentation to a fictional Gordon Gekko (the Dean?). Most ingenious and effective presentation wins...
PS. I really think most unethical CI is a form of mental laziness and lack of imagination, and the sooner we expose students to the ethical and ingenious alternatives the better!
As regards to Industrial Espionage - We are all aware of the consequence of our actions.
Beyond the Cell Membrane is the Information which on crossing the cell membrane in the cytoplasm becomes INTELLIGENCE.
This is Information Harvesting in the Cytoplasm and Early Warning is the Nucleus of the Cell, which is generated once the harvested information passes through the nuclear membrane.