Physical wiretapping: methods and protection

[Демитрий]

Physical wiretapping: methods and protection.

You must have often seen in movies when there is a minibus next to the object, and brave guys are sitting in it and they carry out audio and video control. And now let's dwell on this in more detail. Remember, if sovereign services are controlled, then there will be no minibuses, all information is transmitted by wire, used as power lines (220V), so low voltage (signaling circuits, telephone lines), the signal is transmitted on a subcarrier frequency (very similar to dsl technology).

Operational and technical services do not use the radio range as a signal transmission channel (in rare cases there are exceptions), but private detectives or commercial security services - yes, since they do not have access to the SORM network and use air (radio range) to 100%. According to the installation method, STS (special technical means, and bugs among the people) are divided into a seedless method (yes there are such) and with a call. Now I will dwell on each method in detail.

STS - Special Equipment

Seedless method.
Consider the seedless method. Perhaps the first thing that comes to your mind is a laser directional microphone, a hydrophone or a stethoscope, there are such STS, but they are exotic. I will say more clearly, these means of the special services are practically not used, at most in very extreme cases, due to the fact that the sound is of very poor quality, and it will not always be possible to clean it with noise cleaning. In fact, they use slightly different means, namely wired microphones.

Specialists who install STS are well versed not only in electronics, but also in construction.
The first thing they do is get a plan for the construction of the room, whether it be an apartment building or a detached building. It is requested from the services that they have (architectural, inventory, etc.). Next, the wired microphones are lowered either through the ventilation ducts, or drilled holes in the wall with the help of silent installations (in the slang of specialists such a device is called sandblasting).

Understand why the plan is taken? It indicates the thickness of the walls adjacent to the vent. channels, as well as redevelopment, if any, and indeed a lot of technical information (I won’t disclose all secrets). As a result, in the room that is taken under control there will be a small hole the size of a couple of millimeters.

A sound guide is inserted into it (something like straws of which we drink juices), a microphone is inserted on the back side, further along chain 220 or immediately to a free pair in the telephone cabinet. Sometimes a waveguide is used (this is another type of laser microphone). I must say right away that only people with a very serious level of training own this installation method. And also such methods of wiretapping are difficult to detect with special equipment, but we'll talk about this later.

Approach method.
Approach installation methods, you guessed it, are carried out with entry into a controlled room. The essence of the method is simple - the installation of the STS is associated with penetration into the object. In general, there are many subtleties, you can write a whole book, in a nutshell it’s not so easy to tell. But now we come to the main question - how to protect yourself from all this crap?

Counteraction.
You have probably seen on the Internet organizations that offer STS search services. Now I’ll try to tell more or less about their work, as well as talk about the equipment that they use.

Basically, such a mobile group is equipped with monitoring complexes: both radio and wire communications. There is also a device called a non-linear locator (it allows you to identify any electronic devices that include transistors or microcircuits). X-ray and ultrasound equipment. In addition to all this, endoscopes, metal detectors and many other things are used.

Unfortunately, with the diversity of all the technology for identifying STS that is offered on the market, the market is experiencing stagnation, sadly, but we lagged behind for a long time.
Companies often use outdated equipment, or the qualifications of employees want the best. When you ask a simple, it would seem, question, “how are you looking for microphones in a permoloid shell?” - it turns out that people have not even heard about this kind of microphone (and yet it is used very often and is not detected by a non-linear locator). Complexes for identifying STS that use the radio range and wired communications in most cases are based on scanning receivers. By the way, almost all radio scanners have blind spots, and if a radio bookmark works at a dead center frequency, then the complex simply does not see it.

Therefore, before inviting specialists, let them announce what equipment they use. To identify bookmarks in the radio range, there should be a spectrum analyzer, always with the option of vector analysis, and a minimum upper frequency of at least 20 GHz, and ideally up to 100 GHz.

Let's return to nonlinear locators. The locator should be dual-band or there should be two, usually these frequencies are 900 MHz and 2.5 GHz. If they use only one 900 MHz, then give them the usual SIM card, let them try to find)). Separately, there are complexes of wired communications, they allow you to identify bookmarks that are connected as to an alarm network, 220 V network, telephone lines, etc. The range for scanning on subcarriers from 100 kHz to 30 MHz is already very small at the moment, there are devices that work up to 100 MHz. A good complex "TALAN", as an auxiliary, I highly recommend. In the study on STS, fluoroscopy or ultrasound analysis of structures on foreign bodies must be carried out. Naturally, all measuring instruments must also be checked.

Source: https://telegra.ph/