Why are JTAG and UART still effective attack vectors for IoT devices?
Whether it’s a vulnerable router, an Internet of Things (IoT) connected device, or some other piece of hardware, JTAG and UART debugging test pins left on the device are going to continue to be one of the most effective physical hardware attack vectors available to a malicious actor. Never assume your secrets on IoT devices, such as encryption keys, are safe. You may be wondering what JTAG and UART are, and why they’re left on boards.