Logo Made in Germany GITEX/GULFCOMMS 2018


Booth number: Z2-B8

About us

GSMK is a leading provider of secure communication systems, network security solutions and counter intelligence systems.

As a typical representative of the “German Mittelstand”, GSMK is characterized by a close relationship to our customers, dedication, expertise in research and development, innovation and flexibility. This ensures that our security solutions meet the needs of our customers, today and tomorrow.

GSMK CryptoPhones protect sensitive communication of governments and enterprises on all continents. GSMK Overwatch is used by governments to identify IMSI-Catchers and shut down illegal attacks on the air interface. GSMK Oversight identifies SS7 attacks, securing entire cellular networks from harmful interception.

GSMK has been exhibiting at the GITEX for over 10 years, reflecting our commitment and the strong relationship to our government and enterprise customers in the region. The exhibition is an important date for GSMK to engage in close dialogue with our customers.

Products and services

GSMK displays the full range of Secure Communication Systems, Counter Intelligence Systems and SS7 Security Solutions
GSMK CryptoPhone, Secure Communication Systems

GSMK CryptoPhone, Secure Communication Systems

Governments on all continents protect their sensitive telecommunication with GSMK CryptoPhones. Typical government and enterprise systems come with 500 to 5.000 CryptoPhones (cellular, office, satellite), private switching and system management infrastructure.

GSMK Overwatch, Counter Intelligence against illegal IMSI-Catchers

GSMK Overwatch, Counter Intelligence against illegal IMSI-Catchers

Overwatch protects against malicious base stations, 24/7 and area wide. Security forces and network regulators use Overwatch to protect entire capitals and government compounds spread over the country.

GSMK Oversight, SS7 Security and Vulnerability Assessments

GSMK Oversight, SS7 Security and Vulnerability Assessments

Oversight intrusion detection protects entire cellular networks against SS7 and Diameter attacks such as remote interception, tracking, denial of service and billing fraud.

Our vulnerability assessments have helped to identify and fix vulnerabilities in major networks on all continents.


Marienstr. 11
10117 Berlin

Phone: +49 30 24625000
Fax: +49 30 24625001

K. Koenig
Head of Sales & Marketing
Phone: +49 30 24625000

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ASC Technologies AG
Booth number: Z2-B3
InnovationLab GmbH
Booth number: Z2-B4