Ryan O'neill
CEO at https://arcana-research.io
Seattle, Washington, United States
Summary
👤
Senior🎓
Top SchoolRyan O'neill is a veteran computer security researcher and CEO based in Seattle with over a decade of hands-on experience in binary analysis, reverse engineering, malware forensics, and software protection. He invented Shiva, a custom dynamic linker for Linux ELF that evolved through DARPA AMP and EBOSS programs, demonstrating rare expertise in binary patching and anti-tamper technology. Previously a senior researcher and systems engineer at firms including Leviathan Security and Backtrace I/O, he blends deep low-level systems knowledge with practical tooling for enterprise UNIX forensics. Ryan publishes independent research on bitlackeys.org and is known in the community as an ELF connoisseur who often turns academic techniques into deployable security innovations.
11 years of coding experience
7 years of employment as a software developer
The Innerversity
Github Skills (32)
malware10
parsing10
proc10
elf10
permanent10
reverse-engineering10
preload9
linux9
popcorn9
linker9
ld-preload8
symbol-table8
rootkit8
infection8
defense7
Programming languages (4)
Github contributions (5)
elfmaster/ecfs
Oct 2014 - Jan 2019
extended core file snapshot format
Contributions:324 commits, 4 PRs, 135 pushes in 4 years 4 months
snapshotextended
advanced-microcode-patching/shiva
Aug 2023 - Jul 2026
A custom ELF linker/loader for installing ET_REL binary patches at runtime
Contributions:1 release, 113 pushes, 10 branches in 2 years 11 months
linkeraarch64elfmicrocodereverse-engineering
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