The State Department shuttered its unclassified e-mail system over the weekend as a result of the hack. Officials have refused to discuss who might be behind the State Department breach or even acknowledge whether the breach was sponsored by another nation. Former CISO of the Central Intelligence Agency says he believes the government knows who breached the IT systems. Hackers seek weak area in networks to expose, using them to collect data and act as vantage point into other networks. The Postal Service’s systems contains names of U.S. government employees and how they reach them.”]
Source: https://www.govinfosecurity.com/state-department-white-house-hacks-linked-a-7569