FOCI and PETS 2026
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A Next-Generation Censorship Circumvention Transport
PETS 2026 rump session talk.
"Fountain codes in censorship circumvention rendezvous"
NetHack fourth ascension
Article about my fourth NetHack ascension.
Anti-fascism protests 2026
New photo gallery.
Lair O' the Bear day hike 2026
New photo gallery.
A new lightweight secure proxy protocol
Translation of a Chinese research paper from 2021.
An intrusion detection system in an IPv6 network environment
Translation of a Chinese patent application from 2012.
Fast Flow Table Lookup for High Concurrency Network
Translation of a Chinese research paper from 2017.
Macro-supervision method for online media content security
Translation of a Chinese patent application from 2003.
Central supervisory system for network media security
Translation of a Chinese patent application from 2001.
Canada 2025
New photo gallery.
A view into the network shutdown in Iran, June 2025
Talk at CrySP
FOCI and PETS 2025
New photo gallery
A view into the network shutdown in Iran, June 2025
PETS 2025 rump session talk
A parallel cluster intrusion detection system for backbone network
Translation of a Chinese research paper from 2004.
Architecture of Intrusion Detection for High-Speed Networks
Translation of a Chinese research paper from 2004.
Lair O' the Bear day hike 2022
New photo gallery.
Florida April 2025
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Florida May 2023
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Mount Elbert 2024
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Austin 2023
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Research and implementation of advanced evasion technology based on web middleware
Translation of a Chinese bachelor's thesis from 2018.
Christmas 2022
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Berkeley 2022
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Ann Arbor 2022
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Wallbleed: A Memory Disclosure Vulnerability in the Great Firewall of China
We present, a buffer over-read vulnerability that existed in the DNS injection subsystem of the Great Firewall of China. Wallbleed caused certain nation-wide censorship middleboxes to reveal up to 125 bytes of their memory when censoring a crafted DNS query. It afforded a rare insight into one of the Great Firewall's well-known network attacks, namely DNS injection, in terms of its internal…
Christmas 2021
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Ithaca 2022
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Anti-fascism protests 2025
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Ithaca 2021
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Jeep 200k miles
New photo gallery.
A description method, construction method, and medium for network access control rules
Translation of a Chinese patent application from 2017.
Detection and prevention of DNS spoofing attacks
Translation of a Chinese research paper from 2006.
University of Iowa 2024
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University of Iowa 2024
New photo gallery.
University of Iowa 2022
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Riessen–Horn wedding 2021
New photo gallery.
Implementation of an IP access control technology
Translation of a Chinese research paper from 2001.
A route propagation–based access control method for large-scale networks
Translation of a Chinese research paper from 2003.
Internet censorship and circumvention
Guest lecture at the University of Iowa.
Video from Snowflake talk
Video of the Snowflake presentation from USENIX Security 2024.
Central Denver Public Library reopening 2024
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Halloween 2021
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James Fifield birthday 2021
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Davidson–Markle wedding 2024
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Flatirons hiking 2021
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Wavy Awards 2024
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Wavy Awards 2023
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Wavy Awards 2022
New photo gallery.