This guy offers a patched android.img and some configuration and patched files saying that Anbox has security issues. I'm wondering why he didn't commit to Github though, so I am unsure whether I should use his files. Call me paranoid.

Maybe the points he raises and the fixes he provides could be helpful to you though?

https://fjordtek.com/git/Fincer/anbox-install

If you have a moment could you please just skim through the README on his page and write a quick comment?