In terms of security work arrangement and enterprise anti-theft deployment, it will involve anti-eavesdropping, anti-recording technology and equipment deployment. At present, there are roughly the following ways to protect eavesdropping and recording equipment:
Technical inspection: The use of professional inspection tools to carpet the environment.
Signal shielding: At present, more signal shielding methods are used to cut off and interfere with the signal transmission path of eavesdropping equipment to achieve the purpose of anti-eavesdropping. However, the current disadvantage is that although the signal shielding range has a general range, the range is not controllable, and the device may cause interference to the surrounding normal communication signals when it is opened; In addition, most manufacturers' 5G signal shielding technology is still in the preliminary stage, and the actual shielding effect cannot reach the ideal effect.
Electromagnetic shielding: the use of electromagnetic waves to interfere with secret equipment.
Ultrasonic interference: The use of high-frequency ultrasonic shock to the microphone head of the stealthing equipment is mainly used to interfere with the recording equipment, so that the sound recorded by the recording equipment becomes completely irregular noise.
White noise interference: White noise interference is irregular white noise, which can be understood as when you turn on the radio or use the music player to play music while chatting with friends. Under the cover of the sound of the radio or player, the two of you talk about some relatively private topics. If there is a wiretap or recording device near you, you can only record noisy background sounds. And your voices are completely drowned out by background noise. The premise is that your sound is not higher than the volume of the background noise, and this natural noise is different from the white noise of professional recording jammers. This natural noise can be removed by professional sound processing software at a later stage, and the white noise emitted by professional recording jammers cannot be removed.
Voice interference: This technology is the latest technology, professional equipment to emit and human voice similar frequency, for some current recording equipment with noise reduction function research and development design.
Electromagnetic pulse: Electromagnetic transmitters emit high-power electromagnetic pulse, directly destroy the environment may exist eavesdropping, stealing equipment. And, of course, destroy other electronics in the environment.
