[$] Intel's zero-day problem

In his talk at FOSDEM 2017,Georg Greve mentioned that every recent Intel CPU contains asecond, internal CPU that you cannot audit but which can take over yourmachine. His contention was that this could be used to do bad thingswithout your consent if it turned out to be treacherous or buggy.As of May 1, 2017, the latter prediction turned out to beworryingly prescient.