Help us secure open source.Free pentesting for the projects the world runs on.
Built by the engineers who’ve spent 12 years breaking into the world’s hardest software — now pointed at open source, for free.
First cohort closes —. We review every submission by hand.
Open source runs the world. It gets tested the least.
We believe top-tier security shouldn’t be a luxury only funded companies can afford. So we’re opening Deus Rex to open source — the same autonomous pentest enterprises pay five figures for, free.
You get
A full autonomous pentest of your project. Proof-backed findings, every issue verified, and fixes raised as pull requests you can merge.
We ask
Your feedback, so we can make it better. And if Deus Rex earns it, a few honest words we can share.
Findings are yours. Private until you fix them.
No noise, no drive-by CVEs, no extra work dumped on your plate. Just a clean report and pull requests you can merge.
Public GitHub projects first
Deus Rex is built by Cyrex — twelve years breaking into the systems the world’s biggest studios and enterprises depend on. Now that same craft is pointed at the code everyone builds on.
The Cyrex team brings a wealth of experience and deep technical expertise in game security.
When it comes to penetration testing, Cyrex are clearly the market leader.
Apply for the private beta.
- Free access — a full pentest of your project
- Direct line to the team during beta
- Influence the roadmap
- Featured as a launch partner
Reserve your spot
Drop your email and we’ll be in touch when a spot opens.