It adds another layer of complexity, though, and when someone trips up (and eventually, they will), it lets us know who is doing what and why. It also adds another layer of expense and vulnerability. Part of the beauty of cyberattacks for intelligence agencies is that they are very light on tradecraft. This helps to reduce that advantage.

We actually know who poisoned Alexander Litvinenko and what they're up to today, for example.[0]

[0]https://www.bbc.com/news/uk-35370621