A good article, thank you for posting it.
I left the biz several years ago, but what I saw then is really nothing to what is able to be done now via the net. I remember well a demonstration where a remotely monitored oil pipeline pump was sabotaged via a relatively minor change to the code. The result was quite amazing though. Big Boom, real big.
I'm no computer expert... my friend is. He knew Steve Jobs... worked for Steve Case. But, he was a guy that actually DID coding and built things..
If he says the threat is real, I believe it. Nothwithstanding, Laz's personal guarantee! ;-)