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Zhi Zhang

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Achilles: A Formal Framework of Leaking Secrets from Signature Schemes via...USENIX Security '252025-08-13
Achilles formalizes Rowhammer fault injection against a generalized signature scheme G-sign, automates symbolic differential analysis and secret recovery, and…
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MegaScale: Scaling Large Language Model Training to More Than 10,000 GPUs21st USENIX Symposium on Networked Systems Design and Implementation (NSDI '24)2024-04-16
MegaScale is a production system that trains LLMs on more than 10,000 GPUs and achieves concrete gains: 55.2% Model FLOPs Utilization when training a 175B…
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SoftTRR: Protect Page Tables against Rowhammer Attacks using Software-only...USENIX ATC '222022-07-11
SoftTRR is a software-only defense implemented as a loadable kernel module that protects level-1 page tables by tracking accesses to rows up to six rows away…
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Winter is Coming BackBlack Hat Asia 20192019-03-26
Claims a reproducible exploit that defeats CAT-style physical isolation and gains root and kernel privileges by combining memory allocator grooming…
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