Xinhua News Agency, June 16, according to a report by CNN local time on 15 June, "several" federal government agencies in the United States were attacked by hackers in a cyber attack. Eric Goldstein, executive assistant director of cyber security at the U.S. Cyber Security and Infrastructure Security Agency (CISA), said on the same day that they are trying to understand the impact of cyber attacks and ensure timely remedies, and that the department is "providing support to several federal agencies that have been hacked." It is reported that the source of the hackers is not yet clear.