Success factor:

Our mission is greater safety for everyone. One factor is particularly important: the success of our customers!

Find out what they say about our joint projects here!

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What our customers say

To expand your information security, you are looking for a reliable partner who can
Suits you and specifically supports you in achieving your goals. Here you can get an initial introduction
create pressure about what other customers value about us.






“Right from the start, communication was very practical and without sales talk. Our administrators gave me similar feedback on the implementation phase: Very uncomplicated and consistently positive communication, which makes you motivated to face even difficult internal tasks. We are absolutely satisfied with the project results and would recommend ProSec to other companies.”

Raimund Zimmermann is IT Security Manager at DEHN SE, an international manufacturer of secure protection against the dangers of lightning and surges for people, buildings, electrical and electronic devices and systems.

Our experts had a lot of fun working on the project with Mr. Zimmermann and the Operations Security Team (OpSec) at DEHN: Our project partners were extremely motivated and were able to gain a lot of knowledge transfer and specific insights through active exchange. A 100% positive experience for us too!

PSN testimonials

Raimund Zimmermann IT Security Manager

PSW automotive engineering GmbH




“The high level of competence of the penetration testers and the customer-oriented project communication convinced us that in ProSec we have found an outstanding partner for IT security tests. The tests are an important element for the ongoing improvement of our information security and a key driver for the implementation of our IT security measures. Joint projects with such experienced and motivated professionals are a joy!”

PSW automotive engineering GmbH is a 100% subsidiary of AUDI AG and a leading development partner for the mobility of the future. PSW IT became aware of ProSec through a recommendation and their first joint project was a completely positive experience.


IT / Digitalization Department

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scan.up AG

Business Services


Business Services

“As part of the penetration test, ProSec showed us a comprehensive picture, not only of the requested landing page, but also of all URLs associated with the domain. They exceeded our customer expectations and, through clear recommendations for action (action plan), directly demonstrated concrete measures to ensure the security of our data in the long term.”

Scan.up has been providing comprehensive advice on all issues relating to personnel and aptitude diagnostics for more than 20 years. The focus of the Hamburg-based company is on the selection of employees and managers as well as the further development of personal and professional skills.

Philip Klein

Philip Klein Board of Directors

Bicycle XXL Group GmbH




“We were particularly impressed by the film that we received following the 'Physical Access' test. We used it in the shareholders' meeting to clearly present the topic of IT security. Such visual documentation has an enormous impact and creates a different kind of awareness.”

Fahrrad XXL is a leading e-commerce company in the bicycle industry based in Frankfurt am Main. The Fahrrad XXL Group offers the largest selection of bicycles in Germany and Austria in numerous branches and two online shops.

Oliver Parres

Oliver Parres Team Lead IT Infrastructure

Raiffeisen-Volksbank Aschaffenburg eG

Financial Services


Financial Services

“The JPT was great fun! It was super interesting and at the same time frightening how vulnerable you are. This will help me a lot in my work. The next pentest can come before me!”

Janine Schönfelder is an IT system administrator at Raiffeisen-Volksbank Aschaffenburg eG with 30 branches in and around Aschaffenburg.

Following a penetration test, the bank enabled Ms. Schönfelder to take part in our Junior Penetration Tester Intensive Course (JPT). Ms. Schönfelder now has in-depth specialist knowledge in the area of ​​offensive security and will be able to work even more efficiently on optimizing IT security in the future. Thank you for your trust in us and the warm feedback!

PSN testimonials

Janine Schönfelder IT system administrator

Ranger Marketing & Sales GmbH

Business Services


Business Services

Just a few weeks after the project was completed, thanks to ProSec's pragmatic and solution-oriented report, we were able to carry out 80% of all recommended hardening and process optimization and are continuing to work efficiently and prioritized on the complete processing. Through the project, we not only gained technical know-how, but were also able to benefit from ProSec's experience on an organizational level. Nothing stands in the way of further collaboration on our part!

Ranger Marketing & Vertriebs GmbH is part of the Ströer Group and the European market leader for personal customer advice. Their customers include product partners such as Deutsche Telekom, E.ON and Vodafone Kabel Deutschland.

Information and data security are therefore of particular importance. That's why David Sandfort, as a cyber security officer, relies on the support of the specialists at ProSec to control and expand his IT security. We are proud to have already achieved many important goals for Ranger Marketing & Vertriebs GmbH in our collaboration so far!

PSN testimonials

David Sandfort Cyber ​​Security Officer

Bright spot SE

utility companies


utility companies

“We don't often see external service providers harmonize so well with our team straight away. The communication was always personal and very solution-oriented and the results were a bombshell in a positive sense. We’re looking forward to putting our optimizations based on this to the test in a retest!”

Laura Hofmann is a data protection officer at Lichtblick SE, an energy supply company based in Hamburg. The company is one of the five largest German electricity providers and therefore bears a great responsibility for the reliable supply of electricity to the population.

Ms. Hofmann lives up to this responsibility by continually reviewing and optimizing the information security of Lichtblick SE. We are pleased to be able to support the energy supplier and would like to thank our contacts for their committed and goal-oriented cooperation!

PSN testimonials

Laura Hofmann (Data Protection Officer or DPO)

TDK Electronics AG




“The initial discussions with ProSec and their experience were at a very high level and showed us that we were relying on the right partner. I am 100% satisfied with the services I received and would choose ProSec again at any time!”

Thomas Zeulner is Chief Information Security Officer (CISO) at TDK Electronics AG. The global company develops, manufactures and sells electronic components and systems with a focus on technologically demanding growth markets such as automotive electronics and information technology.

In a globally networked company with highly sensitive production facilities, the demands on your own information security are very high. We would like to thank Mr. Zeulner for the trust he has placed in us and are pleased to have confirmed this with the high quality standards of our specialized team of experts!

Thomas Zeulner CISO

Kontron Austria GmbH




“Mr. Schlaffer was chosen because of the excellent price-performance ratio
Given the circumstances, we chose us as a partner in IT security and we were able to
Convince him of the value of our work through our competence. With the process
and the results of our project he is 100% satisfied and would like us
Recommend to your business partners at any time.”

Andreas Schlaffer has been Head of R&D and IT Manager for 6 years, among other things, responsible for topics relating to information security at Kontron Austria GmbH. The full-service company develops and produces electronic components, modules and systems in the areas of industrial and medical technology.

We were recommended to Mr. Schlaffer by another customer and are pleased that we were able to carry out a completely successful project with Kontron Austria GmbH for both sides.

Andreas Schlaffer Head of R&D and IT Manager,

VRM Service GmbH & Co. KG



Technology, Information & Media

“'Only a real attack achieves a real result.' Nothing has proven truer than this Prosec credo. Your concept and professional approach round off our implemented security measures - from Next Generation FW to SIEM & SOC. We would not have been able to achieve the goal of finding the famous catch that we or service providers have forgotten in order to be able to close potential security gaps without Prosec. Prosec thinks like hackers and not in security solutions. This is your strength and the added value for VRM.”

Dominique Doré is in charge of IT at VRM, a media company for newspapers and advertising papers in print and digital based in Mainz.

Before our project, Mr. Doré had already worked intensively on expanding the cyber resilience of his company. The simulated attacks and the subsequent work-up with Mr. Doré brought our team particular joy!

Dominique Dore Head of IT

WEIG Holding GmbH & Co. KG




After an initial pentest with us, Mr. Naujokat had a very good impression and therefore decided to work with us long-term. He is very happy with this decision and has already recommended us to others in his professional environment.

As head of the IT Security department at the WEIG Group, Kevin Naujokat is committed to expanding cyber resilience. The WEIG Group serves the recycling, cardboard and packaging business units in an efficient circular system with a clear commitment to sustainability and resource conservation.

Mr. Naujokat is responsible for the reliable maintenance of the digital infrastructure and relies on continuous collaboration with our specialists. We are pleased to have been able to successfully support Mr. Naujokat in his mission for a longer period of time!

Kevin Naujokat Head of IT Security department

Glatthaar Keller GmbH & Co. KG




“ ProSec has been a reliable partner for us for years to improve our IT security. We started with an extensive penetration test in which the security professionals from ProSec showed us optimization potential for IT security, evaluated it and then later reliably implemented it together with our IT department. We are now receiving regular support to further improve the level of security we have achieved. For me, as the person responsible for management, the regular status meetings held by ProSec's project manager provide a quick overview of all relevant security gaps. This is also understandable for IT laypeople and gives me a good and secure feeling that I can fulfill my responsibility in this area.”

Marcel Widmaier is managing director at Glatthaar Keller, the European market leader for basements and floor slabs.

We are very pleased to have Mr. Widmaier, a managing director as a partner on the customer side, who is actively committed to information security in his company!

Marcel Widmaier Managing Director





“Mr Cirener came to us with conviction in the face of the challenges
In our time we need a good partner when it comes to information security. He is
very satisfied with the results of our joint project and would like us
Recommend to business partners.”

Fritz Cirener has been managing director of Vogtmann-Herold+Co.GmbH, a company with 77 years of experience in mobility combined with emotionality and sustainability, for over four years.

A business partner recommended Mr. Cirener to us. During the course of the project, in addition to the IT managers, we also worked closely with Mr. Cirener as managing director and were able to support Vogtmann-Herold+Co.GmbH very efficiently and purposefully in expanding its cyber resilience.

Fritz Cirener Managing Partner

Roos GmbH




“Our joint project not only enriched us with extensive feedback, but also simply brought us joy. Thanks for that! We have already actively recommended you and will be happy to commission you again if necessary. We wish you and the whole team continued success and enjoyment in your tasks!”

Christoph Roos has been part of the management of Roos GmbH, an internationally oriented company for electric storage heat and residential ventilation, for 25 years.

He found us through a recommendation from one of our customers and confirmed this recommendation with an NPS rating of 100. Our joint project with Christoph Roos and his team was an all-round positive experience for both sides.

Christoph Roos Managing Director

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