Block URLs and encrypt hosts file

Question

I am looking to block a few URLs from an android device... however, I would like to take an extra level of security and password protect the hosts file.



I think I can do that with ES File Explorer by the looks of it?
https://www.howtogeek.com/221582/19-things-you-didnt-know-androids-es-file-explorer-can-do/amp/



I'm wondering, if I encrypt the hosts file but then uninstall ES File Explorer, will the hosts file stay encrypted?



Or if not, is there another way to achieve this?


— pealo86 | Sources

Answer

If you encrypt the hosts file, the system won't be able to read the file, so it won't work any more. But there's no need: since you need root access to edit the hosts file anyway, any app that you don't grant root access won't be able to edit the file.


— Dan Hulme | Sources

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