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I am thinking about using https://github.com/topjohnwu/Magisk/, but is it safe?
Well, the android rooting community is young by my standards and they do things I would never do, like share random binaries with each other and use megasharelol.tldidonotrecognize to store files. Gross. So, I'm inclined to be a bit paranoid.
There are real dangers out there. People use their phones for everything from banking to storing bitcoin to taking pictures.