Late last year, Nikkei Asia reported that Japan was planning to add thousands of personnel to its military cyber defense unit. Now, we might know why — according to a report from the Washington Post, hackers in China had "deep, persistent access" to Japanese defense networks. When the National Security Agency is said to have first discovered the breach in late 2020, NSA Chief and Commander of US Cyber Command General Paul Nakasone flew to Japan with White House deputy national security advisor Matthew Pottinger to report the breach to officials.