Possibly, given my experience in InfoSec though, and knowing Xfinity/Comcast's reputation. It probably is all stored in plaintext in a database that was written

Possibly, given my experience in InfoSec though, and knowing Xfinity/Comcast's reputation. It probably is all stored in plaintext in a database that was written in 1975 and rather than bother spending the time and money to upgrade management just keeps saying "things are fine this is fine the ALE doesn't justify the upgrade right now" and so the passwords are probably stored in plaintext.