The US Treasury Department announced in a letter back in December that it had been the victim of a security breach, attributing it to a “China state-sponsored Advanced Persistent Threat actor.” Now we know more about the extent of the hack,

The US has issued sanctions against an individual and a company involved in recent high-profile compromises of government officials by Chinese state-affiliated hackers

State-sponsored Chinese hackers reportedly gained access to US Secretary of the Treasury Janet Yellen's computer, first reported by Bloomberg, in a major cybersecurity breach that occurred this past December.