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Enlarge (credit: Intel) Over the past 11 months, the processors running our computers, and in some cases phones, have succumbed to a host of attacks. Bearing names such as Meltdown and Spectre, BranchScope, TLBleed, and Foreshadow, the exploits threaten to siphon some of our most sensitive secrets—say passwords or cryptographic keys—out of the silicon microarchitecture […]
Enlarge / An 8th generation Coffee Lake processor. (credit: Mark Walton) While Intel’s naming scheme for its processors is often best described as “obtuse,” there have been some patterns that the company seemed to follow. For desktop processors, the i7 branding denotes chips with hyperthreading enabled, running two threads on each core. i5-branded parts had […]
Enlarge / A shiny wafer full of Kaby Lake refresh parts. (credit: Intel) Last week, developers on OpenBSD—the open source operating system that prioritizes security—disabled hyperthreading on Intel processors. Project leader Theo de Raadt said that a research paper due to be presented at Black Hat in August prompted the change, but he would not […]
Enlarge / A Kaby Lake desktop CPU, not that you can tell the difference in a press shot. (credit: Intel) Under certain conditions, systems with Skylake or Kaby Lake processors can crash due to a bug that occurs when hyperthreading is enabled. Intel has fixed the bug in a microcode update, but until and unless […]
