False.
> “Instances of classified information being deliberately transmitted via unclassified email were the rare exception and resulted in adjudicated security violations. There was no persuasive evidence of systemic, deliberate mishandling of classified information.”
https://www.politico.com/news/2019/10/18/state-department-hi...
> “While there were some instances of classified information being inappropriately introduced into an unclassified system in furtherance of expedience, by and large, the individuals interviewed were aware of security policies and did their best to implement them in their operations,” the report said.
