No different to Android in general.
Security depends on vendor and what else is installed. Don't use public WiFi.
Also refresh is an issue on eink. Sometimes part of the app doesn't update unless you select something else.
I think eink is best for reading novels. Some apps have stopped working on my eink Android 8.1, but still work on Android 7.0 phone and cheap Android 8.1 LCD tablet. Same Android account. Chrome and Firefox and other browsers only sort of work.
Some apps never worked, though they still do on my 4.1.x Android phone, which since January can't install apps.
One of my Banking Apps needs Andriod 11 minimum
