Comment 5 for bug 1169075

777 means that anyone can write to the socket, potentially from anywhere, and execute the contents. Don't let that "file" be executable; 666 would work better.

For access control, I would never rely on flat-file permissions. If authentication is needed [Mir team?], it would be better to use a client or mutual authentication handshake mechanism such as employing PKI and certificates signed by a CA. After authentication completes, data encryption would not be required.