Spectre comes back from the dead to haunt Intel chips

Security researchers have found new versions of chip flaws affecting Intel and AMD processors that get around existing mitigations for Spectre attacks, resurrecting vulnerabilities that may affect Intel-based Macs.

In 2018, an Intel chip kernel flaw was found that allowed attackers to gain access to protected data, which could include passwords and application keys. While patches and mitigations were put in place to block the so-called "Spectre" attacks from happening, researchers have determined the efforts aren't enough to prevent the attacks entirely.In a paper published by researchers from the University of Virginia and the University of California, at least three new versions of Spectre attacks have been found affecting micro-op caches in Intel and AMD processors.

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