Matthew Bryant
OffSec Engineer at OpenAI
San Francisco, California, United States
Summary
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RockstarMatthew Bryant is an OffSec Engineer with 12 years of security-focused experience across leading tech companies, currently at OpenAI after five years at Snap. He has a strong red-team and application security background from roles at Google, Uber, and Bishop Fox, and also founded Refinery Labs, blending entrepreneurial product instincts with hands-on offensive security skills. Matthew runs security-focused projects and blogs (thehackerblog.com, xsshunter.com) and maintains active code on GitHub, demonstrating prolific tooling and exploit development work. Based in San Francisco, he brings pragmatic threat modeling and vulnerability discovery experience to secure large-scale consumer platforms. A less obvious strength is his history as a web automation developer, which gives him deep insight into attacking and defending complex web application automation and CI/CD workflows.
13 years of coding experience
15 years of employment as a software developer
English
Stackoverflow
4,107reputation
1.6mreached
7answers
28questions
Github Skills (81)
http10
dns10
xss10
fingerprinting10
nameserver10
tld10
proxies10
manifest-json10
cloudflare-dns10
chrome-extension10
chrome10
python9
websocket9
session-store9
static-analysis8
Programming languages (10)
Github contributions (5)
mandatoryprogrammer/sonar.js
Aug 2015 - Sep 2015
A framework for identifying and launching exploits against internal network hosts. Works via WebRTC IP enumeration combined with WebSockets and external resource fingerprinting.
Contributions:48 commits, 5 PRs, 57 pushes in 21 days
fingerprintingwebrtcwebsocket
mandatoryprogrammer/xcname
May 2015 - Jun 2016
A tool for enumerating expired domains in CNAME records
Contributions:8 commits, 5 pushes in 1 year 1 month
cname
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