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We are a rapidly growing team of over 30 cybersecurity experts specializing in various areas directly related to Operational Technologies. We have made it our mission to offer our customers pragmatic solutions to support their activities. Your challenges become our challenges.

Christian Schlehuber

Managing Director / Lead OT Security Expert

Christian is the founder and Managing Partner of CyberShield. He oversees our teams and projects. Additionally, he supports our clients from the development and execution of security programs to engineering in the concrete implementation of measures.

Before joining CyberShield, Christian worked in research on the protection of critical infrastructures for TU Darmstadt. After moving to Deutsche Bahn, he developed the security architecture for the Digital Signal Box of DB Netz AG before working in security management for both DB Netz AG and DB AG. He is the founder of the European Rail Information Sharing and Analysis Center (ER-ISAC) and serves as Convenor of WG 26 of CENELEC TC 9X, which developed the TS 50701 (Railway Applications - Cybersecurity).

In his free time, Christian can often be found taking part in sporting activities such as marathons or alpine mountain tours (he quickly swapped his Newton running shoes for crampons and an ice axe). He also enjoys travelling with the two company mascots Ben and Whisky.

Quote: "At first glance, cybersecurity doesn't seem like a selling point because it doesn't generate greater profits or increase the capacity of a system. However, upon closer examination, it is an enabler for many digital and innovative trends that I currently see. It ensures that we can experience digital transformation without having to worry that attackers will have an easy time."


  • M.Sc. IT Security
  • Certified ISO 27001 Senior Lead Implementer
  • Certified ISO 27001 Senior Lead Auditor
  • Certified NIS2 Directive Lead Implementer
  • CISA ICS CyberSecurity (301)
  • CISA ICS Evaluation (401)
  • Certified Information Security System Professional (CISSP)
  • Certified Information Security Manager (CISM)
  • Global Industrial Cyber Security Professional (GICSP)
  • Certified Ethical Hacker (C|EH) [expired]

Gunter Hochsteiner

Manager Training Service / Technical Consultant Cybersecurity

Gunter leads the project for the development of the Hardening OT Baselines/Guidelines at our company. Additionally, he assists clients in establishing their security programs, analyzes audit findings, and, along with his team, enhances security in the areas of OT and IT.

In addition to his technical responsibilities, he is particularly active in shaping and developing the training area of CyberShield. His State Examination (Teaching Degree) has proven extremely helpful in this regard. During his studies at Heidelberg University, he worked with the IT department on secure networks for teachers and students and managed this field.
Thanks to CyberShield, he was able to pursue this passion more than he could ever have imagined.

On weekends, you can find Gunter in the mornings at the animal shelter walking a dog, and in the afternoons at the gym using the equipment and in the free weights area.

Quote: "IT-Security should be important for every company, as a deficiency in this sensitive field can have devastating consequences. These consequences can extend far beyond financial damages and also impact individuals and society. IT security concerns everyone."


  • ICS CyberSecurity 401V and 301V
  • M.Ed.: Computer Science, English Studies / State Examination for Teaching Qualification: Computer Science, English

Our employees

Christian and the other experts are supported by a creative and competent team.

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