Again new a security flaw discovered in Intel processors that allow attackers to steal any data that’s been recently accessed by the processor. This Zombieload is another speculative flaw in Intel's CPU like spectre, found long ago. This time hyperthreading is the target, which most of the CPUs used to increase the efficiency and overall performance but the best way to get rid of zombieload attack is to disable hyperthreading. So in this video, I have shown how much performance impact you get if you disable hyperthreading from CPU.
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