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]
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/2016-0...