I doubt this was ever classified information. It's written all over DoD and NSA requirements and best practices for staff and diplomats. She was probably brief

I doubt this was ever classified information. It's written all over DoD and NSA requirements and best practices for staff and diplomats. She was probably briefed repeatedly about this as a member of that committee. Here's one example: > Headphones are wired headphones (i.e. not wireless) which can be plugged into a computing device to listen to audio media (e.g. music, Defense Collaboration Services, etc.).[0] [0]: https://dl.dod.cyber.mil/wp-content/uploads/stigs/pdf/2016-04-21_DoD_CIO_Memo-Use_of_Wearable_Devices_DoD_Accredited_Spaces_with_FAQ.pdf https://dl.dod.cyber.mil/wp-content/uploads/stigs/pdf/2016-0...