Counter Surveillance

Counter Surveillance - Technical Surveillance Counter Measures

TSCM, also known as bug sweeping or counter surveillance, is the process of electronically and physically inspecting offices, buildings, vehicles, telephone systems and cabling for the presence of eavesdropping devices.

Our TSCM sweeps use the most up to date equipment available globally, and methods and techniques perfected through years of experience within counter surveillance. We can either inspect business and associated premises as part of a reactive inspection after an information loss or incident, or as part of a scheduled program of bug sweeping inspections designed to enhance the security of business meetings and confidential information.

Our state-of-the-art electronic TSCM search equipment will detect the presence of both active and passive bugging devices, promiscuous monitors and keystroke logging mechanisms. We continuously review new developments to upgrade all counter surveillance equipment used.

In addition, computers and word-processors can be examined for possible sources of data leaks and intrusive surveillance software. We provide this option as part of a TSCM inspection or as a separate service.

Counter Surveillance Service

After initial contact GK Sierra’s TSCM team will carry out a risk assessment via a covert site visit or telephone conference, including a review floor plans. We produce a detailed written proposal outlining your requirements, our service and pricing.

If commissioned, we handle all arrangements, cover stories and procedures for allowing the operation to commence with the minimum of disruption and input to the client. Our experience in organizing TSCM operations spans hundreds of inspections in the U.S. and internationally.

TSCM inspection

The inspection will be carried out covertly and professionally, and is normally out of standard office hours (over night or at the weekend). We will ensure an appropriate cover story is in place and supported by documentation. In addition to the TSCM inspection, GK Sierra will also carry out a physical security review of your target areas, focusing on all aspects of the security of the site.

After the inspection we produce a comprehensive written report outlining all the work carried out during the inspection. This report also details the physical security review undertaken and makes recommendations on the physical, procedural and logical steps required to further secure your business interests.