I'm new to the Raspberry Pi. I just bought a Raspberry Pi 3 Model B and installed on a different SD card the lite version of Raspbian Stretch. But now I need to encrypt the whole partition. I want to run a system which will use databases and files with very sensitive data and its a very big risk if someone take the SD card and reads the file system.
So how can I encrypt the whole partition? I know I can do it in Ubuntu, so I should be able to do it in Raspbian as well... Any help, even if it's little will be very appreciated.
Thanks in advance.