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Which attack exploits speculative execution vulnerabilities in CPUs to leak sensitive data?
- Meltdown/Spectre
- Rowhammer
- BlueBorne
- Log4Shell
Answer: Meltdown/Spectre
Meltdown/Spectre (2018) exploit CPU speculative execution and cache side-channels to read kernel memory or other processes' data. Mitigated via microcode updates, OS patches, and compiler fixes. Highlights hardware-level security challenges. Critical for system security questions.