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Sangho Lee

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APRON: Authenticated and Progressive System Image RenovationUSENIX ATC '232023-07-10
APRON performs authenticated, progressive repair of a corrupt or outdated system image by verifying each requested block in-kernel with a signed Merkle hash…
Talk on
PRIDWEN: Universally Hardening SGX Programs via Load-Time SynthesisUSENIX ATC '222022-07-11
PRIDWEN is a load-time loader that probes remote platform features, decides an optimal set of side‑channel mitigations, and synthesizes a native binary from a…
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libmpk: Software Abstraction for Intel Memory Protection Keys (Intel MPK)USENIX ATC '192019-07-10
libmpk virtualizes Intel MPK so 16 hardware keys become an unlimited virtual key space, prevents protection-key-use-after-free by managing and protecting…
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Inferring Fine-grained Control Flow Inside SGX Enclaves with Branch Shadowing26th USENIX Security Symposium (USENIX Security '17)2017-08-16
Shows a practical side‑channel that leaks branch‑level control flow from SGX by running colliding shadow branches outside the enclave and reading prediction…
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Breaking Kernel Address Space Layout Randomization (KASLR) With Intel TSXBlack Hat USA 20162016-08-03
A new attack called DrK uses Intel Transactional Synchronization Extensions to time aborted transactions and distinguish unmapped, mapped non‑executable, and…
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