The simplest login method, which sends the username and password across as plain text.
Like shouting your name and password across a room to a clerk.
A small office left an old remote login enabled that used this method. Someone on the same network read a staff password in a captured session.
Network covers the managed firewall and switches that sit behind your provider's modem.
Is it safe to use?
Only if the connection is already encrypted. Otherwise, switch to a stronger method.

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