Gynvael Coldwind
Zurich, Zurich, Switzerland
Summary
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RockstarGynvael Coldwind is a cybersecurity leader and hands-on engineer with 15+ years of experience focused on low-level systems, reverse engineering, and offensive security. He spent the bulk of his career on Google’s information security team and now leads HexArcana Cybersecurity as Managing Director, delivering training, research, and consulting. Author of the bestselling Polish book "Zrozumieć Programowanie" and co-author of a practical reverse engineering text, he couples deep technical expertise with clear technical communication through articles, podcasts, and talks. Co-founder and former captain of the elite Dragon Sector CTF team, he has a track record of building competitive security communities and events like Hackeler8 and the experimental magazine Paged Out!. A Pwnie Award winner for innovative research, he’s known for bridging academic rigor with practical tool and exploit development across C, C++, Java, and Python. Based in Zurich, he brings rare experience turning low-level research into impactful, real-world security programs.
15 years of coding experience
Github Skills (41)
ctf10
security10
google10
iconv9
cbor9
msgpack9
json-parser9
json9
streaming9
messagepack9
ctf-events9
cpp8
tilesets8
json-serialization8
map-editor8
Programming languages (6)
Github contributions (5)
gynvael/iface
Dec 2014 - Jan 2018
Rather bad Windows/Linux RPC interface specialized for a Windows-host/Linux-guest configuration.
Contributions:11 commits, 2 PRs, 3 pushes in 3 years 1 month
linuxrpcwindows
gynvael/random-stuff
May 2017 - Jan 2023
Random tools, code snippets, etc. No guarantee that any of this stuff works.
Contributions:29 commits, 34 pushes, 1 branch in 5 years 9 months
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