TSCM Bug Sweep Services

TSCM stands for Technical Surveillance Counter-Measures — the professional discipline of detecting, locating, and neutralising eavesdropping devices and surveillance systems placed without authorisation in a facility, vehicle, or communications network. It is also called a bug sweep, electronic sweep, or counter-surveillance inspection.

The threat TSCM addresses is both technical and physical. On the technical side: RF transmitters broadcasting audio or video; passive recording devices that store locally and are physically retrieved; GSM bugs that activate on a call; laser microphones that read vibration from windows; network taps inserted into ethernet or telephony infrastructure. On the physical side: concealment locations — power sockets, smoke detectors, ceiling roses, furniture cavities, vehicle wheel arches — chosen to place a device in range of the target conversation while surviving routine cleaning and inspection.

TSCM is not a consumer product or a software scan. It requires calibrated instruments, trained operators, and a sweep methodology that covers both the RF environment and the physical space. A professional sweep produces a written record — what was swept, what instruments were used, what the RF baseline showed, and what was found. An uncertified sweep that produces only verbal reassurance provides no evidentiary value and may miss significant threats.

The standard answer is: before any conversation you would not want recorded. In practice, TSCM sweeps are triggered by specific events or by a rolling programme. Event-driven triggers include M&A negotiations, litigation preparation, boardroom strategy sessions, diplomatic meetings, contract negotiations with high-value counterparties, and personnel or partner changes that create a window for device placement.

Programme-driven TSCM runs on a fixed cadence — quarterly or semi-annual sweeps of designated facilities, vehicle fleets, and executive residences — because a single sweep establishes a baseline but does not address the threat that was placed the day after the sweep. Organisations under sustained intelligence interest (governments, defence contractors, critical-infrastructure operators, law firms handling sensitive litigation) treat TSCM as an ongoing control, not a one-off event.

Warning signs that suggest immediate sweep engagement: unexplained changes in RF environment, unusual behaviour from telephony or IT infrastructure, staff reporting sounds on the line, a competitive loss that should not have happened, or a physical security event (break-in, cleaning crew substitution, maintenance access) that could have provided placement opportunity. None of these signals is definitive, but each justifies a sweep rather than an assumption of safety.

Phase 1 — Pre-sweep briefing. We take a brief covering the space (size, construction, RF environment, IT infrastructure), the threat picture (who has had access, what events are upcoming, whether there is specific intelligence suggesting a device), and the client's governance requirements (what level of documentation is needed, whether legal counsel should be copied on findings). The brief shapes the sweep depth and the instrument selection.

Phase 2 — RF environment sweep. Spectrum analysis maps the RF environment across relevant frequency bands (MHz through GHz) to identify transmitters present in or adjacent to the space. Baseline comparison identifies anomalies against the expected RF profile. GSM, 3G/4G/5G, Wi-Fi, Bluetooth, and proprietary frequency devices are all covered. Spectrum data is logged for the report.

Phase 3 — Physical and NLJD inspection. Non-linear junction detection (NLJD) identifies semiconductor junctions — the hallmark of electronic components — in areas that should contain none: furniture cavities, wall voids, ceiling roses, power sockets, picture frames. Acoustic and laser microphone detection covers windows and glass surfaces. Physical inspection covers all access points, fixtures, and infrastructure runs that provide concealment opportunity.

Phase 4 — Report and remediation. Findings are documented in a written sweep report. Devices found are photographed, logged, and removed or disabled under witnessed conditions. The remediation plan covers both immediate action (device removal) and structural improvement (access control, cleaning protocols, future sweep cadence). The report is retained by the client; no copy is held by Mission Support unless explicitly requested for programme management.

Boardrooms and conference rooms. The boardroom is the highest-priority target for commercial eavesdropping. Any room used for strategy sessions, M&A negotiations, litigation preparation, or board meetings holds information that justifies a surveillance investment by a competitor, counterparty, or hostile state actor. We sweep boardrooms as standalone assignments and as part of facility programmes, establishing an RF baseline after each sweep so anomalies in future sweeps are immediately detectable.

Government and diplomatic facilities. Embassies, consulates, government ministry offices, and international institution premises require TSCM as an ongoing operational control, not a periodic reassurance. The diplomatic environment is subject to state-actor surveillance at a level that commercial entities rarely face — techniques, persistence, and patience are materially higher. Our teams work in diplomatic environments with full awareness of protocol, classification handling, and the discretion these assignments require.

Legal and professional services. Law firms, notaries, and professional advisors handling sensitive client matters operate under legal privilege requirements. A compromised boardroom or client-meeting room creates not just a security incident but a professional liability — potentially voiding privilege and exposing the firm to regulatory action. We sweep legal offices and privileged-communication environments on programme cadences aligned to their case and transaction calendars.

M&A, litigation, and high-stakes negotiations. The trigger events most likely to motivate surveillance investment by an adversary are the ones where the information in play has the highest value: live M&A processes, active litigation, crisis communications, and contract negotiations with adversarial counterparties. We provide pre-negotiation sweeps, venue clearance for sensitive external sessions, and post-incident sweeps where a suspected breach has occurred.

Executive residences and vehicles. Eavesdropping threats do not stop at the office door. Senior executives, board members, government officials, and high-net-worth individuals face exposure at primary and secondary residences and in their vehicles. Residential sweeps cover the full property — not just the principal's office or study — because placement locations are chosen for access opportunity, not the listener's convenience. Vehicle sweeps cover GPS trackers, audio devices, and OBD-port monitoring hardware.

Corporate TSCM programmes. Organisations with a sustained intelligence interest — financial institutions, critical-infrastructure operators, defence and dual-use contractors, large professional-services firms — need more than single sweeps. A TSCM programme delivers quarterly or monthly sweeps of designated sensitive spaces, a maintained RF baseline for anomaly detection, post-incident sweep capability at short notice, and a written audit trail that satisfies regulatory and governance requirements.

The Hague — TSCM capital of the Netherlands. With over 150 embassies and consulates, the NATO headquarters, the International Criminal Court, and a concentrated foreign intelligence presence, The Hague is the environment where listening device threats are most operationally significant. Mission Support conducts TSCM sweeps for diplomatic premises, governmental buildings, international organisations, law firms handling sensitive international matters, and corporate facilities in the Beatrixkwartier and the Hague city centre. We operate within established diplomatic protocols and schedule sweeps outside core diplomatic working hours where required.

Amsterdam — boardrooms, deal rooms, and financial sector. The Zuidas district concentrates multinational headquarters, major law firms, M&A advisory practices, and financial institutions — all environments where commercially sensitive conversations generate eavesdropping risk. Pre-deal TSCM sweeps, venue clearance for sensitive external meetings, and post-incident sweeps following a suspected breach are the most common mandates. Mission Support covers the full Amsterdam metropolitan area including Schiphol-adjacent office parks.

Rotterdam — port, logistics, and industrial corporate facilities. Rotterdam's position as Europe's largest port creates a specific intelligence threat: cargo information, logistics route exposure, and trade-secret risk at the intersection of commodity markets and industrial operations. Mission Support conducts TSCM sweeps for port authority facilities, shipping and freight company headquarters, and corporate offices across the Kop van Zuid, the port complex, and the broader Rijnmond region.

Eindhoven and Brainport — IP-critical technology environments. The Brainport ecosystem centred on ASML, the High Tech Campus, and a dense network of semiconductor and advanced-manufacturing suppliers is one of the highest-value intellectual property environments in Europe. Industrial espionage targeting photolithography development, chip design, and advanced manufacturing processes is an active and documented threat. Mission Support conducts TSCM sweeps for technology companies, R&D facilities, and executive offices across North Brabant where the consequence of an eavesdropping incident is measured in competitive advantage and patent value.