the email I got said it was primarily accounts with one-time use and generated passwords were affected. I'm really confused as to why this isn't in the blog.

> due to legacy functionality that enabled customer Domain Admins to view passwords, some of your users’ passwords were stored in our encrypted systems in an unhashed format. This primarily impacted system generated or admin generated passwords intended for one-time use.

Sure enough, the accounts listed in the email as affected were never signed in and still needed a password reset.

The email: https://i.judge.sh/Twilight/iRcF0e7D.png