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Michael Walfish

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Spain: Succinct Proofs for Numerical Computations20th USENIX Symposium on Operating Systems Design and Implementation (OSDI '26)2026-07-13
Spain introduces approximate constraints and a new proof protocol that represents numerical operations directly over rationals with bounded error, instead of…
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Zombie: Middleboxes that Don’t Snoop21st USENIX Symposium on Networked Systems Design and Implementation (NSDI '24)2024-04-16
Claims the first practical system implementing zero-knowledge middleboxes, built as Zombie and evaluated on DNS filtering, that cuts client and middlebox…
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Defending against Malicious Peripherals with CinchUSENIX Security '162016-08-10
Cinch virtualizes the USB bus into a sacrificial VM and inserts a modular enforcer between that VM and the protected system, implemented as a Rust user process…
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Improving Availability in Distributed Systems with Failure InformersNSDI 20132013-04-02
Pigeon implements a failure informer service that groups low-level signals into actionable classes (examples: stop vs unreachability and resource depletion)…
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