Intel has known about Specter since June but rewriting the firmware to handle this vulnerability is obviously not easy. They pledged to protect 90% of CPUs produced in the last 5 years with patches on January 15, but technical errors could cause delays. Earlier this week, Microsoft also had to postpone AMD patch updates after some machines made a blue screen error when updating the patch, unable to boot.
The firmware patch is still known as the most difficult technical issue to face in Specter, much more difficult than patching the operating system or browser. These patches also have the risk of slowing down the device, although it is not yet clear how slow it will be. According to Intel's calculations, the new processor will only be under 5% but the tests have not taken into account the Haswell chip encountered today.
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