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The 3+ years computer scientists spent concocting ways to defend against these supply-chain attacks against chip architecture? It’s bound for the dustbin.
All defenses against Spectre side-channel attacks can now be considered broken, leaving billions of computers and other devices just as vulnerable today as they were when the hardware flaw was first announced three years ago.
A paper published on Friday by a team of computer scientists from the University of Virginia and the University of California, San Diego, describes how all modern AMD and Intel chips with micro-op caches are vulnerable to this new line of attack, given that it breaks all defenses. That includes all Intel chips that have been manufactured since 2011, which all contain micro-op caches. ....

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