> Some of the exposed information included sensitive personnel information and questionnaires by prospective federal employees seeking security clearances.
This already happened almost a decade ago [4] but in a different department.
> The cloud email server, hosted on Microsoft’s cloud for government customers, was accessible from the internet without a password, likely due to a misconfiguration.
The government has security guidelines ("STIGs") and provides instructions as to how to manually implement them [1]. Based on their "Automations" page [2] it would seem as though they have a tool called the "Security Content Automations Protocol Compliance Checker" that _checks_ for misconfigurations but doesn't remedy them. Based on (an admittedly cursory) reading of their literature they don't have any way to automatically _implement_ these measures besides maybe some downloadable GPOs. They do, however, have step-by-step instructions for fixing things using Powershell (example [5]). The fact that they can tell you to run a script manually in a set of instructions but don't seem to provide a Powershell script to automatically do this (that I can find - happy to be wrong) is curious.
> It’s not clear for what reason the DOD took a year to investigate the incident or notify those affected.
They take six to twelve months [3] to certify bespoke applications built by contractors to the Navy's spec to run on their networks... a one-year disclosure timeline seems appropriate.
Publicly-available sources for everything in my post are as follows:
[1] https://public.cyber.mil/stigs/
[2] https://public.cyber.mil/stigs/scap/
[3] https://www.navy.mil/Press-Office/News-Stories/Article/25200...
[4] https://en.wikipedia.org/wiki/Office_of_Personnel_Management...
[5] https://stigviewer.com/stig/microsoft_exchange_2016_mailbox_...