Water hammer

This is why your pipes go bang in the walls!

When you're working with and/or designing these systems all of this is expected. In any modern country there's literally hundreds of regulations that must be followed for steam plants and other systems of the like that prevent this. The really interesting thing is because we've been using these types of "solutions" long before electronics, there are mandated multiple mechanical safety mechanisms to prevent catastrophic failure in them.

The sad fact is that this is really less of a "black hat" hack and almost always directly related to someone failing to follow safety regulations either in design or implementation. The cost of mandated safety devices seem to be more than the cost for bribes to the inspectors.

Discovered via https://www.blackhat.com/docs/us-15/materials/us-15-Larsen-R...