SAS Investigations carry out TSCM Counter surveillance bug sweeps and detection for small and large companies and corporations with a 24 hours emergency service. We have invested heavily in TSCM equipment and our experienced and dedicated personnel use some of the industries most advanced electronic counter surveillance and debugging equipment. We are able to locate all types of electronic listening devices / bugs, telephone taps, hidden video, radio and GSM and microwave devices.
Microwave - Non Linear Junction Detector (NLJD) V.36 sweep (detects active and non active devices)
CPM700 Full kit - Near field detection TSCM
Spectran near field spectral TSCM analysis
GSM196 GSM counter surveillance detector
Spectrum analysers far field counter surveillance analysis of local area transmissions to 12ghz.
Digital frequency measurement and analysis
Physical search (all areas)
Video wireless transmission detector up to 5.8ghz
GSM bug blocker
Car bug and vehicle tracker search
A TSCM Counter-Surveillance Sweep
We will conduct a thorough TSCM counter surveillance search; looking for Hard-wire, Radio Frequency, GSM and laser / Infrared bugs; we will also be searching telephones and systems. The search will consist of an electronic RF spectrum and audio search including a GSM search. We will carry out a room by room and area by area scan. Our Private Investigators will search all areas including telephones and phone lines both inside and outside the property.
In addition the TSCM sweep team will also carry out an audio wall transmission test to determine the acoustic leakage of office walls, especially those surrounding board rooms and senior personnel offices.
As well as the initial counter surveillance search, we can execute further regular debugging searches to maintain your security and peace of mind. This is due to the ease with which individuals can plant bugging devices at some time after our search is completed.
We carry out complete counter surveillance sweeps in the following locations.
Vehicle (car and van)
Micro devices fitted in clothing
Electronic items such as phones, computers, printers, radios, televisions, clocks, lamps etc..
In order to explain the risks that you may encounter from being bugged we have detailed the four main types below.
These are the most recent and easily used bugging device. They are built essentially like the internal parts of a mobile phone except for two areas. They are much smaller than a mobile phone, and they are very effective at spying on the conversations in a room. They work by being phoned by the person spying, they will not ring but will automatically answer and have a highly sensitive microphone allowing the spy to hear room conversations from many meters away. In addition to being very effective, specialist counter surveillance units are necessary to find them as they only transmit when in a call/transmission or for only a few seconds every hour. SAS Investigations use non linear junction detectors, and activators to force the units to transmit. these are specifically designed to find non transmitting GSM bugs.
Hard-wire - Telephone and Line Search.
A Hard-wire bug or transmitter is a listening device that is attached to your phone or phone line. It's generally powered by the line or the phone itself, These are often hard to detect as they generally only transmit when a call is in operation. A hard-wire transmitter can be placed on the phone, line, or central telephone system. The transmitter can even be placed on your line outside of the building, or down the street at the junction box.
Radio Frequency - Spectrum And Audio Search.
RF transmitters send wireless signals through the air. A FM / AM / Microwave counter surveillance scanner device can then intercept these signals.
With today's technology, local spy stores and the internet are selling RF transmitters for less than a hundred pounds. This is making it increasingly easy for "interested parties" to place a device in a room and listen to meetings, important company decisions, or discussions about new products or services. A common place is in the personnel department where details of other employees can be learnt.
Bugs can be located within electrical outlets, under furniture, inside an ornament, clock, or even in a book. A physical search by a Private Investigator will assist the sweep, but the major part is completed by an electronic scanner and NLJ detector.
Laser - Infra Red Bugs.
These types of listening devices operate through a window or similar opening. An operative could easily setup the remote listening device via tripod connected to a transmitter and intercept your communication from miles away. A laser or infrared beam is shot into the room from any distance of up to many miles away. The audio in that room is picked up by the laser beam and transferred into data that is then sent over the light or infrared beam back to the sender. The sender normally has a recorder connected to the laser and can record the conversation.
TSCM Physical Search.
The inspection of mains sockets, suspended tiles, electronic equipment and suspicious or new fittings. This will often include an endoscope search into hidden cavities.
Please visit the Private Counter surveillance page for more information on non corporate TSCM requirements