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Siemens, Trimble, Moody's breached by Chinese hackers, U.S. charges
https://www.reuters.com/article/us-usa-cyber-china-indictments/siemens-trimble-moodys-breached-by-chinese-hackers-u-s-charges-idUSKBN1DR26D

U.S. prosecutors in Pittsburgh in May 2014 indicted five officers from the secretive unit 61398 with hacking
into U.S. nuclear, metal and solar firms to steal trade secrets.
[...]
The company’s website was down on Tuesday. An archived copy of the site from 2016 listed Chinese telecommunications and technology company Huawei as a partner.

かもしれないねえ
APT1こと61398部隊もググってみては