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Your Data, Our Expertise: IoT for Critical Systems

PHYSEC GmbH, originated from the renowned Horst Görtz Institute for IT Security (HGI), is a leading deep-tech company in Bochum. Our expertise in OT and IoT cyber security in Germany, combined with world-class technology, prepares us for future cyber and physical threats. We embody innovation, technology and sustainable digital transformation and specialize in designing efficient security processes through IoTree®. As a spin-off of the Ruhr University Bochum, we benefit from a valuable network that enables continuous innovation

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IoTree® is the service platform for a secure IoT


IoTree® is a secure and easy-to-use IoT platform that helps organizations across industries connect, manage and secure their IoT devices and data to improve efficiency and security in industries such as manufacturing, energy and smart cities.


Devices of all manufacturers can be connected

Cyber and Physics combined

Wide range of process automation options


Easy to use and requires little training


Any transmission technology (e.g. LoRaWAN®, NB-IoT, wM-Bus/OMS) can be used

Top Cyber Security

Security by design and DSGVO-compliant data protection


Wide range of interfaces for connection to application software


60+ employees


8+ years of experience


70k+ connected devices

More than 50 customers rely on us

Cyber and physical security combined

The modern utility develops comprehensive digital services and utilities. This requires efficient and secure solutions to meet the requirements of a CRITIS operator. However, modern and complexity-reducing security standards are often ignored or not considered. We know the high demands on IoT infrastructures and IT security, and form the link between public utilities, suppliers and municipalities, and manufacturers and service providers.

IoTree® Platform with Middleware Connect & Protect

IoTree® is our IoT platform designed with a clear focus on security. IoTree® serves as an interface that allows you to use data collected in the physical world digitally in IoT applications and processes.

 Futuristic visualization of the fusion of a circuit board and PHYSEC logo

SEAL: Secure supply chain and tamper protection

Building on the SIoT module, the Anti Tamper Radio (ATR) chip can be used to implement further safety functions, such as tamper protection of the product in operation or across the supply chain.

Our areas of application

Our flexible platform, IoTree®, is used in many utility sectors, smart facilities and smart cities. This enables utilities to reduce costs, open up new business opportunities and expand municipal services. We have already successfully implemented numerous applications and significantly increased resource efficiency.

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Strong IoT security solutions that are also armed against serious attackers. Through innovation in the field of IT security and a strong team, we are convinced that together we can achieve great things.

PHYSEC founders Christian Zenger and Heiko Koepke

About us

In 2016, Christian Zenger and Heiko Koepke founded our company, which now manufactures industry-leading products.


Our company promotes an ambitious and international working environment with a flat hierarchy.


We have consistently secured our place at the forefront of the industry, winning numerous awards along the way.

What our network says

Stadtwerke Göttingen Service

"The cooperation with PHYSEC is a great enrichment for us. The continuous support and the direct exchange enable us to digitize the metering system quickly and reliably. PHYSEC's comprehensive understanding of its IoTree® platform has led to the creation, implementation and further development of the Heat Efficiency Package."

Municipal Utilities
Goettingen AG

Gelsenwasser AG

"The cooperation between Gelsenwasser AG and PHYSEC GmbH is always constructive, characterized by a very high level of technical competence and an open, trusting relationship with each other. With this background, we have already successfully implemented the LoRa®TLS project for efficient remote meter reading, which we will continue to develop together in the future."

Gelsenwasser AG

Stadtwerke Bochum Netz GmbH

"We have been working and developing together with PHYSEC in the field of Internet of Things since 2018. Together, we have quickly and reliably established an area-wide LoRaWAN® network within Bochum and use the data hub IoTree® to visualize and evaluate received data - without compromising on IT security."

Municipal Utility
Bochum Netz GmbH