Mark Jansen

[Mark Jansen @learn_more]

Just launched https://t.co/Y68h9WOsvF - a searchable index of Windows application compatibility shims.

Ever wondered why an old app magically works on a new Windows version? These shims are the invisible patches doing the work. Browse ~115k of them across Windows versions.

[ReactOS @reactos]

#ReactOS now has a Certificate Manager!
Courtesy of our developer @learn_more.

[ReactOS @reactos]

Longplay of Serious Sam on real hardware.
2560x1440p, 4x Multisample AA, 16x Anisotropic Filtering.
All achieved with #ReactOS!!!

Watch the test by @AotoriHibiki here:
https://t.co/lSnsbf7lWE

[Mark Jansen @learn_more]

@LinuxWelt @LundukeJournal Uninformed people like you are what makes misinformation campaigns a success. Do you also answer all spam / scam emails?

[ReactOS @reactos]

Today marks 30th year of #ReactOS. Happy Birthday ReactOS!
We would like to thank everyone for supporting us along our long journey of building a Windows-compatible, free and open source OS!

Read our 30th year blog post here:
https://t.co/rVG1I3fq2m

[Connor McGarr @33y0re]

Starting 2026 with a new blog! I've really been enjoying my Windows on ARM machine - so my post is about interrupts for WoA. This includes x64/ARM differences, virtual interrupts, Hyper-V's synthetic controller, and Secure Kernel interrupts/intercepts
https://t.co/HvSbtsCtGu

[ReactOS @reactos]

New year present from Timo!

After months of preparatory work, MSVCRT in #ReactOS has just been synced with Wine-10.0!
Overall 30% decrease in API test failures, newly working/improved apps and... Another major step for NT6 compatibility bringup achieved!!!

[Omar 🍋 @ocornut]

Unexpected experiment, volume 1:

[ReactOS @reactos]

Our developer @cbialorucki1 has posted an update about his work on API tests for #ReactOS

Read it here, and share:
https://t.co/S44EGXysQR

[ReactOS @reactos]

The future is coming.

As we shift our focus towards more modern Windows versions, our developer @The_DarkFire__ has written a blog post about researching WDDM on #ReactOS.

You can read it here, and share!
https://t.co/QLalFQB2n8

[RE//verse @REverseConf]

Welcome back Hasherezade (@hasherezade) to our RE//verse review board! Hasherezade, a malware analyst and software engineer from Poland, is known for her impactful work in cybersecurity and reverse engineering. @hasherezade has created several open source tools including PE-bear, PE-sieve, and HollowsHunter that are extensively used by analysts and incident responders. She helps share her knowledge with the industry through articles, talks, and trainings on topics including malware analysis, process injection, and memory forensics. AND she’s helping curate the RE//verse 2026 lineup! So be sure to submit your talks before November 14: https://t.co/s6BArTl4R3

[Yarden Shafir @yarden_shafir]

Looks like this SDB policy flag in 25H2 might block EasyAntiCheat.sys on systems with HLAT because of the driver's page table tampering

[SEKTOR7 Institute @SEKTOR7net]

Skipping Winsock - AFD.sys for-the-win!

A series of posts by Mateusz Lewczak (@MateuszLewczak) on how to use afd.sys driver to implement custom network connectivity.

Highly recommended!

Source: https://t.co/bKmryCtBhg

#redteam #maldev #malwaredevelopment

[x86matthew @x86matthew]

this is my short analysis of a little-known security feature built into Windows that inadvertently broke one of our authenticode signatures recently https://t.co/p7x4eg4OvR

[Connor McGarr @33y0re]

Stack tracing and symbol resolution now working side-by-side with the secure call data itself! Going to clean this up a bit more and publish soon.

[ReactOS @reactos]

Our developer @cbialorucki1 has been hired to work on #ReactOS API test suite! In addition of fixing test infrastructure, his effort will help future NT6 (Vista and newer) compatibility works!

Read the news here: https://t.co/CC1BPSOHcr

[hasherezade @hasherezade]

"Going Native - Malicious Native Applications" - by Protexity: https://t.co/94DYvIrwcj - interesting read about using applications with Subsystem: Native for offense

[hasherezade @hasherezade]

New #TinyTracer (v3.0) is out - with many cool features: https://t.co/qvbQqaUq16 - check them!

[hasherezade @hasherezade]

What if we traced local functions just like we trace the exported APIs? 👀Coming soon in #TinyTracer...

[Rolf Rolles @RolfRolles]

I haven't been publishing much lately, but not because I haven't been doing research -- in fact, I've done more than ever in the past five years. My ~200KLOC backlog will soon begin trickling out into the IDA/Hex-Rays ecosystem.