Notorious Spectre CPU vulnerability returns hitting JIT engines via side channel attacks
THE SO WHAT
Spectre’s Branch Target Reuse variant hitting JIT engines is a reminder that speculative execution bugs are a recurring class, not a one-off patch. If you operate high-sensitivity workloads on shared hardware, revisit your threat model — browser, VM, and JIT isolation may need hardening even if you ‘fixed’ Spectre years ago.
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