Solarwinds Trojan horse hack CIA, NSA?

https://www.bloomberg.com/news/articles/2020-12-17/u-s-states-were-also-hacked-in-suspected-russian-attack How does a supply chain Trojan horse happen at this scale? Network software and other Admin level utilities are so opaque that it is very difficult to detect. Seriously interested in how to detect and prevent nation state pwns. #software