They can't provide her with a secure device. That's the Secretary of State of the United States of America who they can't provide with a secure device and so they leave her, literally to her own devices. Apparently nobody reviewed how she was communicating and advise her directly about her own behaviour. "Much less, ok what do you need? We'll design a system that does that with the best security we can manage. We'll tell you exactly what not to do. Mr/Madam Secretary." Whoever the secretary of state is.
Fire them all and start again. You can't do worse than this can you? No matter who you've got in power you're selling them and US State Department policy. Hillary, yeah, to hell with her, but that's entirely beside the point and totally a sideshow in this story. I can't think of a single politician who would know and understand the security implications of electronic communication without being directly advised in the most clear and emphatic fashion possible.
Does anyone care to speak up for the competence on display here?