Computing is hard enough, but the sophistication and proliferation of attacks on IT infrastructure, from the firewall moat surrounding the corporate network all the way down into the guts of the operating system kernel and deep into the speculative execution units on the physical processor, make the task of computing – with confidence – doubly difficult. It hasn’t helped that applications have become increasingly distributed and virtualized, spread across networked machines and propped up on various layers of software abstraction.

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