This week, a pair of vulnerabilities broke basic security for practically all computers. That's not an overstatement. Revelations about Meltdown and Spectre have wreaked digital havoc and left a critical mass of confusion in their wake. Not only are they terrifically complex vulnerabilities, the fixes that do exist have come in patchwork fashion. With most computing devices made in the last two decades at risk, it's worth taking stock of how the clean-up efforts are going.

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