In a world where digital connectivity permeates every aspect of our lives, the tools that can disrupt this connectivity—commonly known as jammers—have become increasingly relevant. These devices, capable of blocking signals across a range of frequencies, occupy a unique place in modern society. They promise both improved privacy and security, yet...

In today's highly interconnected business era, the issue of information security is becoming increasingly important. Whether it is internal business secrets, or with customers or partners of sensitive data exchange, may face the risk of illegal eavesdropping, monitoring. Once the confidential information is leaked, it will bring incalculable losses...