We got a call one day from one of our customers, panicked because one of their vendors sent out a product data disc that had updates for all their software, as well as a nasty virus. Their network was air gapped, but not sneaker ware gapped, and we ended up racking up some nice service charges to bring all their systems back from zombie land. The disc came from an international company with thousands of distributors - I can only imagine how much they spent on that little error paying back said distributors.