This whitepaper is a case study that analyzes the security of modern bluetooth keyboards. In the course of this research project, SySS GmbH analyzed three currently popular wireless keyboards using Bluetooth technology that can be bought on the Amazon marketplace for security vulnerabilities. The following three devices were tested for security issues from different attacker perspectives: 1byoneKeyboard, LogitechK480, and MicrosoftDesignerBluetoothDesktop (Model1678 2017).
You can download it from the following link: https://packetstormsecurity.com/files/download/148279/Security_of_Modern_Bluetooth_Keyboards.pdf
Source: https://packetstormsecurity.com/files/148279/Case-Study-Security-Of-Modern-Bluetooth-Keyboards.html