U.S. lawmakers are demanding answers after it was revealed that China-backed hackers had accessed Treasury Department workstations and unclassified documents through a compromised third-party software provider.
The department said it was working with cybersecurity experts, the FBI, intelligence agencies and independent investigators to and assess the impact of the incident.
Beijing called the U.S. accusation of Chinese involvement another example of “unwarranted and groundless allegations” from Washington.
