Reykur is building the future of proactive security, helping organizations identify architectural threats before they become costly vulnerabilities.
Reykur AG is a cybersecurity company based in Zürich, building an automated, continuous threat modeling platform, on a stubborn belief that security belongs in design, not in clean-up.
By connecting to the artifacts your team already has (tickets, design docs, IaC, and code), Reykur maps data flows, surfaces threats, and tracks controls as your systems evolve.
Security is a design problem, not a patch problem. We catch it where it starts: in the architecture, before code ships, so the smoke never becomes a fire.
reykur/ˈreɪ.kʏr/
Icelandic for “smoke”:
the first sign of fire, long before the flames.
Founders connect through the Swiss DEF CON community.
Swiss entity established in Canton of Zürich.
Early design partners onboarded. You are here.
General availability for security teams and developers.
We deliver the uncomfortable truth. Security cannot work without clarity. Attackers already know, so it’s time you did too.
Security is a design problem, not a patch problem. We build for the architecture, not just the software stack on top of it.
The smoke is our signal. We operate at the edge of emerging threats, never waiting for the threat to evolve into an incident.
Much of the early work on Reykur took place within the walls of The International beer bar in Zurich. The staff and regulars have been incredibly supportive throughout our journey, providing not just excellent hospitality but genuine encouragement as this vision took shape.
We are grateful for the community that welcomed us and the conversations that helped refine our thinking. Some of the best ideas emerge in unexpected places.
In loving memory of Andy, whose warmth and spirit will always be part of this story.
The Swiss DEF CON chapter is where the Reykur team first connected. The Swiss security community has been an invaluable source of collaboration, feedback, and support as we developed our vision for modern threat modeling.
Be among the first to try Reykur and help shape the future of threat modeling.
No spam. We'll only email you about Reykur.