“The threat and the challenge is persistent. The Chinese remain very aggressive in their use of cyber,” Assistant Secretary of Defense Randall G. Schriver said during a press briefing on a new report.

ASUS's statement contrasted with the findings of researchers who called the hack seemingly “one of the biggest supply-chain incidents ever.”

CrowdStrike says it has observed China-based actors try to break into the servers of six Western groups in October and November, marking an uptick in attacks originating from China. Researchers say Meyers the nature of the attacks suggests the hackers were looking for information on how the U.S. coordinates with other governments’ militaries.