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Xiaolong Bai

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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…
Talk on
All Your Apple are Belong to Us: Unique Identification and Cross-Device Tracking of Apple DevicesBlack Hat USA 20192019-08-03
Study demonstrates concrete methods to fingerprint and link Apple devices across reboots using public APIs, hardware identifiers and disclosed vulnerabilities…
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Eternal War in XNU Kernel ObjectsBlack Hat Europe 20182018-12-03
Claims that Apple mitigations are bypassable by corrupting IPC objects and formalizes the attack as ipc_port Kernel Object-Oriented Programming; uses XNU…
Talk on
The Last Line of Defense: Understanding and Attacking Apple File System on iOSBlack Hat Europe 20182018-12-03
Shows a concrete exploit that bypasses APFS snapshot-based remount mitigation to make the read-only root appear writable by swapping mount internals: create a…
Talk on
Picking Up My Tab...26th USENIX Security Symposium (USENIX Security '17)2017-08-16
Researchers demonstrate a practical attack called Synchronized Token Lifting and Spending (STLS) that sniffs an offline payment token on NFC/MST, audio or…
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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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