Private conversations change interviews, how to prevent recording leaks!

　　shared two recording leak cases. During a lunch meeting, there was a conversation about the trend of A shares in 2013, but this conversation was recorded privately by a salesperson of Essence Securities, and the recording was then circulated among various agencies and brokerages. This "eavesdropping" incident made Zexi quite angry. According to sources, Zexi may withdraw all seats in Anxin Securities. At that time, Zexi's shareholding funds in Essence Securities exceeded 500 million yuan, and the transaction volume exceeded 10 billion. Once the cooperation between the two parties broke down, Essence Securities might lose several million yuan each year.

　　As early as 2015, Jack Ma secretly sang Jingdong, saying "Jingdong will become a tragedy in the future" and "Don't touch Jingdong..." Unexpectedly, this chat was leaked out by a friend who recorded the chat. , A headline article by Jack Ma criticizing JD.com was made by the media, and it spread quickly. A chat between friends was publicly reported as a report, causing unwarranted trouble to JD.com.

　　Later, Jack Ma apologized to JD.com for the incident. In the apology, he said humorously, "It's hard to guard against, next time I chat in the bathhouse..." In today's increasingly fierce and cruel and complex market competition, private conversations and business The means and methods of stealing secrets in activities are becoming more and more professional and concealed. In real life, "eavesdropping" is happening every day. How can we avoid it?

　　Let’s first understand the principle of recording equipment: With the development of science and technology, the popularity of mobile phones, voice recorders, miniature devices or disguised eavesdropping devices has brought huge threats to business security. The process of recording is that the microphone (MIC) first collects the surrounding sound, converts the sound into an analog signal, amplified by the amplifier, and then sends it to the analog/digital conversion circuit to convert it into a binary digital signal, and writes sequentially under the control of the write signal It is stored in the memory RAM, and when playing sound, the stored digital signal is decoded into audio and then output by the audio amplifier.

　　How to prevent recording more effectively? The most effective way to prevent recording is to generate random noise signals through the recording masker, which will suppress the voice signal, so that the recording equipment picks up only noise information, but cannot distinguish voice information. , And cannot restore the original information from the recorded signal, thus ensuring the security of the voice information. The recording blocker adopts security encryption processing, through the high and low frequency sound source mixing processing, effectively preventing later recovery.

　　Whether it is a variety of wired or wireless pickups, microphones, as long as it is a capacitive pickup, it can be completely interfered by the recording shield. Do you think the recording blocker is very tired? Recommend a MDPB-L7B recording jammer. Its biggest feature is that the FPGA-based ultrasonic noise algorithm can effectively jam mobile phones, voice recorders and other digital devices, can record noises, and completely eliminate the harsh ears that a few people can hear sound. This recording jammer has a long interference distance, which is more than two meters for 95% of mobile phones, more than 5 meters for 60% of mobile phones, and 10 meters for iPhone X and iPhone 8, which can be effective Protect the content of the conversation.

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