CSS - Innovation through technology

The company CSS Computer Security Service GmbH was founded in the German city of Essen in October 1984 to offer innovative solutions in the field of computer security. Today, we offer the necessary hardware and software for the security industry, security engineers and all companies with sensitive control tasks.

Partnerships:

Customised offer preparation

We are as flexible as you need us to be. Depending on your underlying requirements, you will receive your own personalised offer. With our well-rounded product portfolio, you will always get the right solution for your company.

High performance. Top quality. Innovative.

Thanks to 39 years of professional experience with guard control systems and customers in Germany, Benelux, Austria, Switzerland and Slovenia, as well as an international network of suppliers and trading partners, we can provide you with expert advice and work with you to find the right solution for your requirements – and, of course, all at a fair price-performance ratio.  We also offer you competent German-language support, instruction and training via remote maintenance or on site and after-sales service from our employees.

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Our products & our service

KEY MANAGEMENT

Discover the solution for storing and organising your keys. Automatic issue & return saves you time and creates transparency. Every movement is recorded in an audit-proof manner.

GUARD CONTROL SYSTEMS

Be it for individual properties with just a few checkpoints or for large precincts comprising many separate properties – we offer security service providers the right guard control systems. Also available as an online solution and with ATEX certification.

ID CARD CREATION

You can easily create professional ID cards in your own design yourself. With our practical software and our high-performance card printers, this can be done in just a few seconds.

REPAIR AND MAINTENANCE

Has your product suffered damage? No problem! We handle the direct repair service for you and take care of any necessary maintenance work.

PERSONAL CONSULTATION

Call centre? No thanks! Our employees remain personally available to help you with all your concerns.

AFTER-SALES SUPPORT

We are also happy to help you with questions and requests after the purchase.

WHAT SETS US APART

Tailored offer preparation
We are as flexible as you need us to be. Depending on your underlying requirements, you will receive your own personalised offer. With our well-rounded product portfolio, you will always get the right solution for your company.

Expertise and know-how
Competent and efficient advice is just as important as a good product. With us, you benefit from over 30 years of market experience. There are no queues or busy lines with us. You can always reach us during our opening hours.

Services from a single source
CSS stands for service. From advice and purchasing to training, after-sales service and repairs – our team is there for you in person! No hassle with third-party providers, no discussions with the manufacturer.

SOLUTIONS

CSS offers you a comprehensive range of services and in-depth industry knowledge to help you solve your organisation’s most challenging problems. Since our foundation in 1984, our list of returning and new customers has grown steadily.

SECTORS

Here, we list our most frequent target groups. If you don’t belong to any of these sectors, don’t worry. We have something to offer something for everyone. Security is not limited to certain industries.

Customers who love us

Vollmergruppe Dienstleistung, Mülheim

We have been well-looked-after for over 25 years. The CSS GmbH team is committed to working with us in a spirit of partnership, and has supported us over the years with regular system updates and new WKS solutions for continuous modernisation.

Stadtwerke Lünen GmbH

CSS GmbH takes care of our ever-growing range of tasks, and provides us with an innovative key management system. We would like to emphasise the solid communication, quick problem solving approaches and rapid implementation of customised IT special services.

WSD-Werkschutzdienst Sicherheitsdienste Grether e.K

Security is understood as prevention: in line with this motto, security is also a top priority in terms of key management. With the OKKI mobile safe, the keys of our security service customers are also optimally stored during operational tours – this gives our clients and employees alike a good feeling.

Kötter Services

We rely on solutions from CSS for guard control systems, key management and individual workstation protection. We appreciate a spirit of professional cooperation, the solution-orientated approach and the quick response to all our questions. We are happy to recommend CSS to others!