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Continuous Purple Teaming that simulates adversary behavior

The Offensys platform validates your security controls against realistic, behavior-based attack simulations. Bridge the gap between costly manual testing and continuous security assurance.

What can Offensys do for you

Stop wondering if your defenses actually work. Offensys gives you continuous, evidence-based validation of your security controls so you can focus on what matters.

  • Curated threat library 

    Access a constantly updated library of attack techniques grounded in current threat intelligence and real-world adversary tradecraft.

  • Continuous regression testing 

    Security rules break silently when environments change. Schedule continuous simulations to catch issues before attackers do.

  • Custom simulation builder 

    Adapt to your specific risks. Easily build custom simulations or modify existing playbooks to match your organization's needs.

  • Seamless integrations 

    We automatically validate if attacks were blocked or detected by integrating with your SIEM, saving you hours of manual verification.

  • Detection engineering 

    Detailed execution traces and telemetry provide the granular insight blue teams need to create and tune high-fidelity detection rules.

  • Compliance-ready reporting 

    Generate evidence-based reports for DORA, NIS2, and other frameworks. Prove that your controls work, not just that they exist.

Why security teams choose Offensys

  • Behavior over tools 

    We simulate the technique, not just the tool that was used. Your detections stay effective even when adversaries inevitably change their implementation.

  • Advanced tradecraft 

    Simulations can run entirely in-memory using advanced execution techniques, mirroring how modern APTs and red teams actually operate on your endpoints.

  • Zero-noise validation 

    Our correlation engine eliminates false positives, so you can trust every finding. Know reliably what was blocked, what was detected, and what was missed.

  • European engineering 

    Netherlands-based and privacy-first. We minimize data exposure by processing locally, with flexible cloud hosting in any global region for full data sovereignty.

How it works

Offensys combines a curated library of attack techniques with advanced execution and correlation to continuously validate your security controls. Run simulations on-demand or continuously and get results you can act on.

1. Choose from the Library

Simply choose from our intelligence-led library of attack simulations to get started, or use the builder to implement custom simulations tailored to your specific threat landscape.

1. Choose from the Library

Offensys Packages

Flex

Price on request

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Features:

  • Standalone execution for multi-client or air-gapped environments
  • Generate simulations once, execute anywhere
  • Offline results processing: data never leaves your network
  • Ideal for highly regulated industries

SaaS

Price on request

Request a demo

Features:

  • Offensys Cloud Platform (European-hosted)
  • Full library of behavior-based procedures and playbooks
  • Create custom playbooks for your threat landscape
  • SIEM integration for detection validation
  • Continuous regression testing
  • SSO/SAML authentication
  • Standard procedure development requests

On-Premise

Price on request

Request a demo

Features:

  • Full Offensys Platform in your environment: no cloud dependency
  • Full library of behavior-based procedures and playbooks
  • Create custom playbooks for your threat landscape
  • SIEM integration for detection validation
  • Continuous regression testing
  • SSO/SAML authentication
  • Extended procedure development requests

Founding team

Sander Maas

Sander Maas

Co-Founder

An offensive security expert with over a decade of experience and a focus on Purple Teaming

GitHub
Cas van Cooten

Cas van Cooten

Co-Founder

An offensive security enthusiast and Red Teaming expert, specialized in applying adversarial tradecraft and developing offensive security tools

GitHubX
Cor Verhoeven

Cor Verhoeven

Co-Founder

An experienced product enthusiast and people leader who loves solving the right problems

Request a demo

See how Continuous Purple Teaming bridges the gap between costly manual testing and continuous security assurance. Get in touch to explore Offensys for your organization.

info@offensys.nl