How to detect and disable these electronic eavesdropping devices?
Now is the 21st century. We live in the information age, and information is a precious resource. With the development of wireless technology, it is difficult to keep information private and protect it from third parties. Currently, special equipment such as GSM exploits, hidden microphones and lasers is available to almost everyone and used for spying. Many people don't even know that the eavesdropping vulnerability appeared a long time ago. The famous plot was used for the first time in the United States in 1972. A group of experts at Nixon's election headquarters infiltrated the Democratic candidate's headquarters and installed hidden radio microphones so they could hear what the other was saying. This may be the first time eavesdropping technology has been used by law enforcement or secret services, as well as by ordinary people. There may have been various eavesdropping loopholes being used for political and industrial espionage at the time.
Today, these eavesdroppers are not particularly sophisticated. Any educated and experienced expert can organize a complete wiretapping system. So today we've decided here to introduce readers to the types of widely spread eavesdropping devices, how they work and how to detect or disable them.
wireless microphone
This wireless microphone is a very handy device to hide from eavesdroppers. They include a microphone, power supply and radio transmitter. These small devices can be powered by batteries, but in this case, they work for short periods of time. Premium versions are powered by mains. These devices are often installed in wall sockets, light fixtures, and other hard-to-find places.
The main disadvantage of using a battery-operated wireless microphone is the limited operating time, but it is easier to install. These little bugs have different working ranges, they can hear and can vary from 15 to 80 feet. The transmission radius can be very large, ranging from tens of meters to hundreds of meters. Sometimes evil people may use relay networks to further broadcast the signal.
Wireless microphones can use different frequency ranges, and the broad propagation ranges are 140-200 and 450-480MHz. The higher the frequency, the greater the transmission range and power consumption. Also, the higher frequency makes it easier to penetrate walls and other obstacles. Fortunately, special receivers can be used to detect such devices. But advanced versions may win special signal modulations; the ability to intercept and hear them. In this case, you can try to block its broadcast with UHF/VHF jamming equipment.
network transmitter
Network transmitters are small devices installed in various devices that collect and transmit information in the low frequency audio range. They use the grid to send signals and can receive signals from any wall socket in the same segment of the grid.
The main disadvantage of this eavesdropping device is that the first transformer destroys the signal, so you have to be very close to the target area. Also, it takes time to install this kind of bug because it has to be connected directly to the grid. We should also mention that there is no universal way to stop them. You should check all equipment and make sure no one suspects them. signal jammer
GSM bug
The GSM eavesdropper is basically the same as the original cell phone. The eavesdropper is powered by a battery, usually a widely available lithium-ion battery. It consists of a microphone and a GSM module with the SIM card of the local mobile operator. After an eavesdropper detects the surrounding noise, just dial a certain phone number and the nefarious person will listen to everything that happens near the device. The advantages of this device are that it has a wide working range, can be used anywhere, has GSM coverage, and is very easy to install. Also, they are widespread and anyone can buy such equipment on the Internet. These vulnerabilities are widespread and are a major reason why large companies install GSM signal blockers in conference halls and senior executives' offices. This may be the only thing preventing these devices from transmitting.
stationery microphone
Fixed microphones can be installed and disguised in various places. They are connected to the central receiver by tiny wires. Typically, you can attach a piezoelectric sensor to a table and you can use it as a microphone.
The main trick here is that the sound makes the table vibrate, the sensor reads these vibrations and transmits it to the receiver, which converts it into sound. These microphones are very effective, but installing them can take a lot of time. Also, you have to get very close to the target.
Also, it should be mentioned that with the development of modern smartphones, the danger of eavesdropping is increasing, as evil people can use their smartphones as eavesdroppers. It's very easy to install a special app that will make your smartphone dial a specific phone number and act as a GSM bug. So, as you can see, there are many special devices for stealing information. As we have already mentioned, they are often used for political and industrial espionage, however, as long as information is a valuable resource and these devices are widely disseminated, we must be fully prepared to use anti-eavesdropping equipment to detect and disable eavesdroppers.
