UPDATE: PLEASE HELP ME TEST
At some point you just need to stop looking and be blissfully ignorant … this was not one of those days.
In and update to my previously updated blog article, I have found another instance where the plaintext password was written to system logs. This time I found it in more persistent log.
The previous examples were found in the unified logs which can hang around for a few weeks, this new example stores the exact same information in the system's /var/log/install.log. I've found that the install.log will only be wiped out upon major re-installation (ie: 1