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Luyi Xing

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X.509DoS: Exploiting and Detecting Denial-of-Service Vulnerabilities inUSENIX Security '252025-08-13
An automated tool generates and mutates crafted X.509 certificates to fuzz parsing and validation code, discovering 18 new vulnerabilities and confirming 12…
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Dilemma in IoT Access Control: Revealing Novel Attacks and Design Challenges in Mobile-as-a-GatewayBlack Hat Asia 20232023-05-09
Bought and reverse-engineered 10 real-world devices (mainly smart locks and trackers) and finds every vendor drops critical semantics when translating cloud…
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Design Flaws and Deployment Chaos in Cloud-based IoT Access Control PoliciesBlack Hat Europe 20222022-12-05
Analyzes actual cloud IoT deployments and finds concrete flaws: policy semantic gap between MQTT topic wildcards and cloud policy semantics lets hashes/plus…
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Codema Attack: Controlling Your Smart Home Through Dangling Management ChannelsBlack Hat Asia 20222022-05-10
Analyzes 14 top-rated devices and finds real-world takeover paths where unused management channels let an attacker control locks and lights by binding to a…
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How I Can Unlock Your Smart Door: Security Pitfalls in Cross-Vendor IoT Access ControlBlack Hat Asia 20212021-05-04
Demonstrates concrete attacks that turn temporary guest access into persistent control of smart locks by exploiting cross-cloud delegation gaps (Google Home…
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Security Holes in the Integration and Management of Messaging Protocols on Commercial IoT CloudsBlack Hat Europe 20192019-12-02
In this presentation, we report the first systematic study on the protection that leading commercial IoT clouds (e.g., AWS IoT Core, IBM Watson IoT, Azure IoT…
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Discovering and Exploiting Novel Security Vulnerabilities in Apple ZeroConfBlack Hat USA 20162016-08-03
Systematic reverse engineering shows Apple ZeroConf components — Bonjour impersonation, Multipeer Connectivity PID spoofing, AirDrop over the private aw0…
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