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Xiangyu Zhang

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SOFT: Selective Data Obfuscation for Protecting LLM Fine-tuning against...USENIX Security '252025-08-13
SOFT identifies low-loss “influential” training samples after a one-epoch warm-up, flags those below a validation-loss threshold, replaces them with…
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ParDiff: Practical Static Differential Analysis of Network Protocol ParsersOOPSLA 20242024-10-20
ParDiff statically extracts protocol-format constraints from C implementations, extracts finite-state machines ordered by buffer indices, and uses bisimulation…
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WATCHER: In-Situ Failure DiagnosisOOPSLA 20202020-11-15
WATCHER is an automated in-situ failure diagnoser built on iReplayer that deterministically replays crashes, identifies the failing…
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MPI: Multiple Perspective Attack Investigation...26th USENIX Security Symposium (USENIX Security '17)2017-08-16
Prototype implements LLVM-based instrumentation plus an annotation miner that identifies top‑level task data structures and injects task IDs into provenance…
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Screen after Previous Screens: Spatial-Temporal Recreation of Android App...USENIX Security '162016-08-10
RetroScope reconstructs temporally ordered previous Android app screens from a single memory image by merging that image into a host emulator and driving the…
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