It is the company employing her, not the other way around. Company has policies and procedures. If I'm bound not to disclose the details of project I'm working at some company, does it violate my freedom of speech?
I'm sure US is not the only country having such concerns.
As for the article, it is full of pretentious crap if you ask me. "information operations"... "electronic warfare"... "declassified"... "digital revolution"...