At the end: "tar/pigz/nc transfer is not secure Finally, there is one advantage that scp still holds: its transfer is secure while pigz/nc transfers data in c

At the end: "tar/pigz/nc transfer is not secure Finally, there is one advantage that scp still holds: its transfer is secure while pigz/nc transfers data in clear text. So, if you are using unsecured networks, this option is probably not for you."