Explore the latest advancements in covert backdoor transmission with this conference talk on Ghost Tunnel 2.0: Blue Ghost. Delve into the innovative use of Bluetooth technology for establishing multiple secure tunnels between client and server simultaneously. Learn how this method enables separate channels for file transfers and command execution while evading tracking and sniffing attempts. Discover the advantages of using Bluetooth traffic, which often bypasses standard protection measures. Examine the implementation of duplex communication using only BLE advertising packets for specific operating systems, eliminating the need for scanning and connecting operations. Gain insights into this highly covert connection method and its potential applications in isolated environments.