SSH Private Key Permissions using Git GUI or ssh-keygen are too open

Question

Recently I\'ve been unable to clone or push to github, and I\'m trying to find the root cause.

This is on windows

I have cygwin + git as well as msy

Answer 1

After upgrading my Cygwin installation to a version around February 2015 (1.7.34(0.285/5/3) 2015-02-04 12:14 x86_64 Cygwin), I suddenly ran into the UNPROTECTED PRIVATE KEY FILE warning.

I fixed this problem after running the following command:

setfacl -s u::rw-,g::---,o:--- ~/.ssh/id_rsa

(another answer to another question gives more context)