About Us

macmon secure GmbH

The Technology Leader for Your Network Security

macmon secure GmbH has been developing network security software since 2003 and is based in the heart of Berlin. macmon secure extends its proven protection to all enterprise resources in the cloud in 2021 with its zero-trust network access strategy, and is the only provider of NAC plus SDP with Identity and Access Management from Germany.

The products macmon NAC (Network Access Control solution) and macmon SDP (Secure Defined Perimeter) are used worldwide to protect networks and cloud resources from unauthorized access. 

macmon has a broad diverse range of customers varying throughout all industries, capturing SMB’s, medium sized enterprises through to large international corporations. 

macmon  – smartly simple!

Figures & Facts

Since 2003

Development of Network Access Control software (NAC)

Since 2021

Development of Secure Defined Perimeter (SDP)

Since 2022

Belden Inc. Industrial Network Solutions (INS) Affiliation

Service Portfolio

Consulting, implementation, support, trainings for macmon security software

Business Division

ICT, IT security and Network Access Control (NAC)

Industrial Solutions

Public sector, healthcare, financial services, insurance, science, research, telecommunications, media, trade, industry, transport and logistics.

Our Motivation

What Drives Us

macmon secure GmbH has set itself the objective of providing the option to all the companies - regardless of size of the company and the sector - to control and secure their network accesses. Network Access Control has already been praised and offered for many years by various manufacturers - but most of the projects have unfortunately come to nothing or even failed. The technologies were just not mature or the approaches were incorrectly selected.

With the product macmon NAC we want to show that it is definitely possible to ensure the security of network accesses and that it is also easy to implement. The requirement to cope with a variety of networks itself has a big role to play! Our objective is to ensure the support and security without time consuming changes in the respective environment.

The change in the world of work, which is accelerating due to mobile working and advancing digitalization, the Internet of Things and the outsourcing of various services to the cloud, are reasons why companies have to rethink network security. Now, in addition to securing local networks, the focus is also on resources in the cloud. We, at macmon secure, are following this change and since 2021, in addition to the proven macmon NAC, we now also offer macmon Software Defined Perimeter (SDP), an architecture that not only secures traditional resources via VPN but also applications in private and public clouds.


Christian Bücker, Business Director

Christian Bücker has been working in the IT industry since 2006 and gained relevant industry experience at R. Bücker EDV Beratung Datentechnik GmbH, an independent IT security specialist that has been successful in the market for more than 30 years, where he acquired the relevant industrial experience initially as an assistant to the management and then as an authorized officer.

Today, he combines his IT security know-how while provide consultation on NAC solutions and strategies, on encryption and data security concepts and has been the managing partner of macmon secure GmbH since 2012.


Being successful means combining know-how.

Since its inception, macmon secure has had a motivated team with high standards set for their own performance.

In the field of IT security that is changing very rapidly, it is a challenge to be constantly aware of the latest developments and changes and to be "always at it" on one's own initiative. We deal with this challenge in the team by exchanging information and specializations that complement each other optimally.

Our team that now consists of more than 70 members includes diploma engineers and business managers, software engineers, bachelor and master of science degree holders in applied information technology, diploma and qualified IT specialists, who together contribute in further developing our macmon NAC software in a market-oriented manner, in successfully implementing the NAC and SDP projects at our customer locations and hence contribute to our success.

We are very proud to be part of the Belden Group as macmon secure GmbH. Under the leadership of Brian Lieser, macmon is part of Belden's Industrial Network Solutions (INS). INS is a global organization headquartered in the Stuttgart area and includes the leading networking and connectivity brands Hirschmann, ProSoft, OTN Systems and Lumberg Automation.

We are convinced that the combined competitive position with an outstanding team and product portfolio will significantly improve the industrial networking market.

We are Innovator of the year 2021

With our development of macmon SDP, we are proud to be part of the series of well-known and fascinating innovators 2021. With this award, the German economy honors actors and hidden champions of the German economy who master the challenges of economic action and change and even better: shape them as innovators. The largest public award of the German economy has come to an end with a record participation of 24,771 votes. We would like to thank everyone for their votes and support! This great tailwind is an incentive for us to continue innovating for you with new ideas.

© macmon secure GmbH