Innovative. Reliable. Scalable.


The GSMK Overwatch® and GSMK Oversight® network security systems as well as GSMK's SS7 vulnerability testing and consulting services allow mobile network operators, telecommunications regulatory authorities, and public safety and security authorities to defend themselves against illegal interception, user tracking, manipulation and fraud on the network level, covering the entire signal chain from edge to core. more


GSMK designs and manufactures end-to-end encryption systems, terminals and software that allow secure, reliable and user-friendly communications across network borders. Our unique 360-degree approach to mobile device security manifests itself in the GSMK CryptoPhone® product line of secure mobile, desktop and satellite terminals that offer strong end-to-end encryption, protection of meta data, and a hardened operating system that protects our secure mobile devices against attacks from the outside. more


GSMK CryptoPhone® Modular offers a solution for the problem of how to counter widespread wiretapping by integrating custom-branded end-to-end voice and message encryption in large fleets of existing mobile devices. more