As a teaching moment? I've been told a story about a group of embassy staffers (state department, not the other kind) that were in the habit of being rather loose with sensitive conversations over the local telephones. This was during the cold war when secure conversations often meant driving into the office to speak face to face, which could understandably make weekend news rather unwelcome. This apparently made some folks on station rather unhappy, but repeated admonishment fell on deaf ears. The reported solution was to remove a tiny bit of insulation from several of the phone wires as they entered the building on the roof. This lead to a very occasional clicking on the lines as wind would move the wires and cause a momentary short which blossomed into a newfound respect among the corps for communication protocol.

Most people learn much better by doing (or getting done).