The U.S. Cybersecurity and Infrastructure Security Agency (CISA) reported no evidence of a broader cyberattack affecting other federal agencies following the December breach at the U.S. Treasury Department. The Treasury attributed the attack to China-backed hackers who gained remote access to employee workstations and sensitive documents. A private key from technology vendor BeyondTrust was compromised, facilitating the intrusion. CISA continues to monitor the situation and collaborate with federal authorities to ensure an effective response. The Chinese government has denied involvement in the attack.