From time to time I find myself in the position of explaining the type of work that I do to people who are not in IT (holiday parties, relatives, etc). I sometimes just have to say my line of work is “computer security.” From there you usually get questions about a suspicious email they received, or what the best AV is for their son’s computer, etc.
Anyways, I found a good video a few years ago titled “Warriors of the Net.” It is actually pretty good for introducing non-technical people to the idea of a network, and what (sort of) is going on inside the wires, and the “Interwebs.” Granted it is a little dated in that for security it only talks about Firewalls (this is before IPS, DLP, and other technologies), but it still gets the job done.
this was awesome. we used this a lot in the past