Current portfolio

Open Systems

Open Systems is one of the leading Cyber Security as-a-service providers with leading Managed Detection & Response (MDR) and Secure Access Service Edge (SASE) offering in Europe and the US

Open Systems secures and monitors IT networks and business-critical applications for global enterprises, NGOs and institutions.

Private Capital

Open Systems

Open Systems

About Open Systems

Founded in 1990 by Florian Gutzwiller in Basel, Switzerland, Open Systems has achieved consistent sustainable growth and transitioned from a Managed Security Services Providers (MSSP) into a leading MDR (Managed Detection & Response) and SASE (Secure Access Service Edge). Open Systems protects IT networks and business-critical applications for global enterprises, NGOs and institutions covering the entire cyber security “kill-chain” from protection, detection to response by combining human expertise, advanced threat detection processes, and world-class technology. Headquartered in Zurich, Switzerland, Open Systems currently operates in more than 180 countries with a second US headquarter in Redwood City, California.

Market trends and drivers

The investment in Open Systems provides access to the rapidly growing Cyber Security as-a-service market at an inflection point combining MDR (Managed Detection & Response) as well as SASE (Secure Access Service Edge), benefitting from strong secular growth drivers: i) increased regulations, ii) lack of in-house security IT capabilities, iii) a more complex cyber threat environment, and iv) increased use of mobile devices, force organizations to outsource cyber security tasks.

Open Systems is able to address those challenges best by offering an end-to-end cyber security solution, tailored to the organizations’ individual needs.

Investment potential

EQT Mid Market Europe is excited to support the continued growth of Open Systems across both its existing products and geographies market as well as to actively pursue new growth opportunities. Particular focus will be on strengthening the Company’s go-to-market approach, continue its internationalization especially into the US and broaden its product offering. In addition, it is intended to actively pursue synergistic M&A in a fragmented market.

Board of directors

  • Chairperson
    Bernd-Michael Rumpf
  • Board member
    Michael Fey
  • Board member
    Maggie Chan
  • Board member
    Martin Bosshardt
  • Board member
    Gavriella Schuster


  • CEO
    Geoff Haydon
  • CFO
    Andreas Seidl
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