- scp defaults to SFTP over SCP protocol by default with these releases.
- The origin/reason for the changes started here:
  https://www.cve.org/CVERecord?id=CVE-2019-6111
- And a good discussion of what changed:
  https://unix.stackexchange.com/questions/571293/is-scp-unsafe-should-it-be-replaced-with-sftp/571549#571549
- Incompatibility came to light with the following tickets where the
  requesters did a recent OS upgrade:
  https://help.hcc.unl.edu/a/tickets/34925
  https://help.hcc.unl.edu/a/tickets/34956