https://news.slashdot.org/story/18/12/14/166244/chinese-hackers-breach-us-navy-contractors
Im sure the examples noted above are an interesting insight into this field and in reality it goes both ways, with the west constantly 'attacking' those states and companies it sees as a 'threat' ... https://en.wikipedia.org/wiki/Cyberwarfare_in_the_United_States
https://www.cbc.ca/news/politics/china-envoy-warning-huawei-ban-1.4982601https://www.theglobeandmail.com/politics/article-china-threatens-reprisals-if-canada-bans-huawei-from-its-5g-networks/