In World War 2 the British developed "exploding rats." The idea was to pack rats with explosives and leave them near boilers. The person shoveling fuel would ev

In World War 2 the British developed "exploding rats." The idea was to pack rats with explosives and leave them near boilers. The person shoveling fuel would eventually find the rat and shovel it in to the furnace to dispose of it - where a relatively small explosion would cause the pressure vessel to rupture and take out an entire train or industrial facility. A single shipment of 100 explosive rats was sent across the border and was intercepted. What resulted was a massive amount of German energy spent on trying to detect rat shipments and having to consider exploding rats in their threat model for every further operation. Stuxnet not only delayed the the Iranian nuclear efforts, it made everything a hundred times more complex going forward because they realized not even air gapped computers were safe. Not to mention they no longer trust any of their monitoring or instrumentation, which Stuxnet made a point of faking... imagine trying to debug even the smallest issue when you don't trust a single piece of data.