Microsoft last week confirmed in an advisory on a Microsoft Security Response Center post a report by SOCradar of a misconfigured Microsoft endpoint that was not in current use possibly exposing over 65,000 organizations’ data.
This storage endpoint had communication between Microsoft and clients. Some of the data included in the misconfigured endpoint may have included names, email contents and attached files, and more. After they received the report, it was secured and configured correctly. They’ve also properly notified customers.
Learn more about the vulnerability on Microsoft’s official post on this here.