About Crimson7

Think like an attacker. Build for defenders.

Our research informs what we test. Validation shows what holds up. Engineering turns the findings into defenses teams can use.

Why we exist

Close the gap between findings and action

Attackers do not separate testing, detection, and response. We connect those disciplines through C7 Platform and specialist services, helping teams see where defenses hold, where they fail, and what to improve next.

What we do

Four disciplines. One way of working.

Research shapes the scenarios. Simulations test the defenses. Engineering and operations turn the result into a practical next step.

Adversary Research

We study how attackers operate. Malware analysis, breach investigation, and TTP development inform the simulations and detections we build.

Threat Simulation

We replicate adversary behavior. Red team exercises, purple team programs, and continuous validation test your defenses against how threats actually work.

Detection Engineering

We build defensive capability. Detection rules, hunting queries, and response playbooks, delivered as code, validated against real attacks.

Security Operations Support

We extend your team. Managed services that integrate with your SOC, providing expertise without overwhelming your operations.

How we work

The principles behind the work

Defense requires offense
You can't protect what you don't understand. Our offensive research powers everything we deliver, making defenses stronger by understanding how they're broken.
Action beats awareness
Reports gather dust. Detection rules protect organizations. Every engagement produces operational output, code your team can deploy.
Continuous beats periodic
Threats evolve constantly. So should your validation. We built Purple Rain because year-round security partnership delivers better outcomes than annual testing.
People, not just tools
Automation amplifies expertise; it doesn't replace it. Our work combines senior human insight with intelligent tooling, the best of both.

The people

Meet the team behind the work

Researchers, engineers, operators, and leaders working across the platform and our services.

Nick Maeckelberghe

Nick Maeckelberghe

CEO

Damian Myles

Damian Myles

CTO

Jeff Schiemann

Jeff Schiemann

Board Advisor

Kenneth Hansen

Kenneth Hansen

Director of Marketing

Joey Verleg

Joey Verleg

Director of Engineering

Adriaan Neijzen

Adriaan Neijzen

Head of Professional Services

Jean-Georges Valle

Jean-Georges Valle

Head of HEI & Compliance

Bryan De Houwer

Bryan De Houwer

Lead Researcher

Join Us

Want to Work With Us?

Let's discuss your security challenges and how our approach might help. Or if you're looking for a career in offensive security, explore our open positions.

Book a demo30 minutes · With an engineer