A post on the DarkNavy website has given more details on the inner workings of the Starlink satellite network.
The terminal consists of two parts: the router and the antenna (which is actually an RF transceiver and antenna all together).
The transceiver is 100% full of printed circuit board with many RF chips and a custom ST Microelectronics Cortex A-53 quad-core CPU, and hacking has been taken to the extent of gaining root access to the device, something which SpaceX has attempted to counter by disabling the UART via a firmware update.
This extreme access has allowed the code to be analysed, and while some security questions have been raised, such as the fact that all Starlink terminals globally use the same SSH keys, this is not yet a cause for major concern.
However, the importance of being unique per device is highlighted, particularly in order to avoid being vulnerable to man-in-the-middle attacks, an issue that could be exacerbated if host keys are shared.
