Physical Signs of Tampering
- Check the dust: Look for clean rings or halos of dust around heavy objects like lamps, clocks, or filing cabinets that may have been moved.
- Inspect fixtures: Look for crooked smoke detectors, wall clocks, exit signs, or thermostats that might hide a pinhole lens or microphone.
- Examine wall plates: Check if the screws on electrical outlets or light switches look stripped, or if paint and wallpaper are chipped.
- Look for debris: Check the floor or desks directly beneath vents, ceiling tiles, and outlets for tiny flecks of drywall or ceiling tile dust.
Audio and Electronic Red Flags
- Listen for buzzing: Sit in total silence, ideally late at night, to listen for faint clicking, humming, or buzzing sounds that active recording devices emit.
- Test for interference: Notice if your desk speakers or landline phones make a rhythmic clicking sound right before or during times when no calls are being placed.
- Check landlines: Listen for sudden drops in volume, scratchiness, or popping sounds on office phone lines, which can indicate a physical wiretap.
Digital and Device Monitoring
- Monitor device health: Watch for personal or work phones running unusually hot or suffering fast battery drain from background data uploads.
- Look for computer lag: Watch for unexpected CPU spikes, sudden screen flickering, or webcam indicator lights turning on when you are not on a call.
What to Do Next
- Do not touch anything: Leave the area immediately and avoid removing or dismantling any suspicious devices, which can destroy evidence.
- Report securely: Notify your corporate security or a professional technical surveillance countermeasures (TSCM) team using a safe external device or method.
- Above all else ensure you hire a professional: this is a very specialist service and sadly there are cowboys out there offering to do this, with little or no experience, buying some kit which looks impressive, but really isn’t!
So does your business need a Bug Sweep ?
TSCM [Technical Surveillance and Countermeasures] – Bug Sweep
Technical Surveillance is the legal and illegal placement of an electronic device for the purposes of recording private conversations and theft, and the detection of these devices. These spying devices are more commonly referred to as “Bugs”
This tends to be mostly commercial and sometimes domestic use, legally deployed by many businesses to detect theft of goods and information by employees or rival companies or domestically cheating partners, but also illegally to gain information about an individual or business.
Surelock’s engineer has been carrying out bug sweeps for our clients for over 30 years, for a variety of clients, all the equipment used is purpose made.
We can offer this service legally –
https://www.surelock.org/services/electronic-countermeasures-sweeps-bug-sweeps
These so - called Bugging devices fall into basically two types
Radio and Hardwired [non radio]
Radio
Radio enabled devices transmit the conversation or film to a nearby receiver via UHF, VHF, MICROWAVE, BLUETOOTH, CELLPHONE [GSM] or GPS [Tracking]
Detection of Radio Bugging Technology
Our very experienced and fully qualified Electronics Engineer will detect these devices using modern ‘State of Art Equipment’ including Laboratory grade ‘Radio Spectrum Analysers”
Military grade handheld Radio Frequency Near Field Scanners. Our engineer has 40 years’ experience in the operation of this technology
A computer based dynamic, full spectrum, radio scanning system is used to intercept the radio signal and demodulate [convert to audio] any suspicious transmissions detected by the Spectrum Analysers. All of this equipment is of the highest grade and specification and requires a high degree of technical skill to operate. Listening devices of the fixed hard-wired type cannot be detected in this way.
Hardwired Bugging Devices
Hardwired devices are similar except they do not utilise radio reception or transmission technology i.e. phone tapping, mini-Recorders with or without remote microphones. These devices are widely available on the high street such as Argos or Currys. These recorders are usually secretly placed within the ceiling of the perpetrator and a remote wired microphone cable run via the ceiling space to the target office i.e. a colleague or possibly a manager or CEO
These devices with a built-in battery and memory can often record for up to a week if sound activated.
Detection is only possible by search and examination of wiring furniture and electrical equipment.
Fingertip Search
A physical search of the target area is crucial and the root of all Counter Surveillance Operations, whether the target is commercial, residential or a vehicle. A physical search may be the only means to uncover certain non-emitting non radio surveillance devices, such as hard-wired microphones with recorders, fibre optic devices, passive resonators and inactive remote controlled “dormant” devices.
To physically search the whole of a building would be extremely time consuming, expensive and disruptive. The perpetrator would for example gain very little by placing an open microphone to listen in on a busy open plan office, a very noisy call centre area or minor employee's desk area. As a very experienced Electronic Surveillance Engineer, we are aware of course of the limitations of so-called bugging devices. No matter how sophisticated. For it to be effective the listening device is still required to offer its key element, the microphone, to the outside world. Hiding a mic inside a filing cabinet or desk drawer for example would render it almost useless. Where appropriate i.e. specific nominated offices, are ‘fingertip’ searched, for example office furniture, electrical fittings etc searching for the mics and controlling elements i.e. the transmitter batteries or the wiring associated with a hard-wired recording device.
All telephone devices, electrical sockets; light switches, electrical equipment, furnishings, wall coverings, ceilings and floors are very closely inspected. Each telephone set is examined and scanned for radio transmissions and tested for sound activated transmitters. If the base unit or the handset shows any signs of having been dismantled the device is stripped and the internal electronics minutely examined.
Office False Ceilings
False ceilings are a favourite to secret recording devices usually open areas populated by minor employees are very low risk and because of high ambient noise levels a ceiling mounted device for example would be rendered almost useless.
Although these devices are very rarely used, because once discovered the wiring can be traced back to the source i.e. another office, the adjacent building or to a hidden recorder within the cavity itself, [the latter requiring frequent visits by the perpetrator to retrieve tapes and replace batteries etc.]
It is well to be aware of this and where possible high-risk areas are kept secure
The false ceilings in all of the nominated rooms will be thoroughly inspected for hardwired devices.
With our experience we can easily identify strange and suspicious cable run within ceiling cavities i.e. accessories such as junction boxes, lighting ballast and transformers, air conditioning control systems and networking cable runs etc
Tip, always examine desk areas following a visit from a guest in particular boardrooms or managerial offices don’t leave guests alone if possible.
If the visitor excuses themselves to use the toilet DO NOT discuss business, visitors will often leave a briefcase behind i.e. possibly hidden recorders
Vehicle sweeps
We can also sweep your car for covert listening devices / cameras and trackers which are now commonly used by criminals and those wishing to gather intelligence about you.
Successful Conclusion.
At the end of the operation, we can genuinely tell the client that there is nothing there or indeed find out that there was, that is what our clients rely on! Any device found will either be left in situ and photographed or removed and exhibited.
What you say in private is your business, keeping it that way is ours.
Clientele
Our clients of many years range from Law Firms, Banking Institutions, Blue Chip Companies, Local Authorities, Premier League Football Clubs, Celebrities and Private Individuals, they are not hiding anything illegal but just wish to protect their business or home, especially when important decisions / boards meetings are taking place.
Costs
This is a specialist service and time consuming, mainly for corporate businesses, but can be adapted for large domestic premises, the costs will be calculated following requests and sent to the client before commission, as each case differs. Be careful of cowboys, and man walking around with a black box with red and amber flashing lights, is probably out of his depth.
You will be in safe hands, so if you have a need for this professional service, please contact us –
C: www.surelock.org/contact-us
T: 0333 6000 300
