The U.S. Treasury Department confirmed a cyber breach attributed to Chinese hackers, gaining access to workstations and unclassified documents via BeyondTrust software. Detected on December 8, no current access to Treasury systems exists. The incident is attributed to a state-sponsored Advanced Persistent Threat and is considered a major cybersecurity incident. While the Treasury collaborates with the FBI and CISA, Chinese officials denied involvement, calling claims groundless. This incident is linked to a broader cyberespionage effort, Salt Typhoon, impacting multiple telecommunications companies.