Gynvael Coldwind 🐈

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security researcher/programmer ⁂ previously security team @ Google ⁂ Dragon Sector CTF founder/player ⁂ technical livestreamer ⁂ slide maker ⁂ he/him
YouTube[EN]https://www.youtube.com/@GynvaelEN
YouTube[PL]https://www.youtube.com/@GynvaelColdwind
Bloghttps://gynvael.coldwind.pl
Twitterhttps://twitter.com/gynvael

My second article in Paged Out! #8 was about the architecture of the terminal emulator on Linux - it's a really obvious thing until you start digging into details, as usual.

Web viewer: https://pagedout.institute/webview.php?issue=8&page=43&article=Linux+terminal+emulator+architecture
PDF download: https://pagedout.institute/?page=issues.php

Pwndbg 2026.02.18 is out! Enhance your GDB or LLDB experience!

We visualize branches in nearpc, synchronize your decompiler (IDA/Binja/Ghidra) via decomp2dbg, annotate stack variabless from debug info or decompiler, support new Linux kernel debugging commands - for tracing SLUB allocs/frees or dumping tasks information.

See what's changed in: https://github.com/pwndbg/pwndbg/releases/tag/2026.02.18

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#gdb #lldb #pwndbg #pwn #ctf #reverseengineering

Paged Out! #8 is out! https://pagedout.institute/ @PagedOut

In "An AWKward Modem" (p. 28), I demonstrate how to write a tiny modem in 5 lines of AWK and shift it into the near-ultrasonic range. πŸ”Š

https://seriot.ch/misc/awkward_modem.mp4

Today in InfoSec Job Security News:

I was looking into an obvious ../.. vulnerability introduced into a major web framework today, and it was committed by username Claude on GitHub. Vibe coded, basically.

So I started looking through Claude commits on GitHub, there’s over 2m of them and it’s about 5% of all open source code this month.

https://github.com/search?q=author%3Aclaude&type=commits&s=author-date&o=desc

As I looked through the code I saw the same class of vulns being introduced over, and over, again - several a minute.

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Just got this link on my discord - https://www.kickstarter.com/projects/bitman/bootblock-rebels - passing it along because this book looks fun!
Bootblock Rebels

The Hidden Stars of the Amiga Underground. Stories from the Amiga Cracking Scene.

Kickstarter
@TheMNWolf Hmm that sounded like Lawful Evil, but I guess it's Neutral Good? ;)
@TheMNWolf Good Neutral, got it!
@mkj Yeah, I think that might have been a better choice for chaotic evil ;)
@indigoat Oh this is so spot on!