A major UK financial institution asked SureCloud to test for vulnerabilities in its WiFi networks, digital mobile radio (DMR) systems, cordless DECT phones, Bluetooth devices and more. The organisation was concerned that its data and networks may be exposed to potential vulnerabilities from vectors that they hadnt tested before. The first vulnerability I found was that the encryption of DMR (digital mobile radio) systems can quite easily be cracked. Keylogging is usually the preserve of trojan malware, but it can also be done using a remote antenna to target office or computer.”]
Source: https://informationsecuritybuzz.com/articles/frequing-obvious-things-discover-test-rf-networks/