Comment by Paradigma11

For me the main difference is if the activity is clandestine and meant to deceive/hide the origin. Everybody tries to influence things their way. Doing it covertly is a hostile act. That does not mean that I would not condone hostile acts against my/our enemies but it is something take into account. And regarding your Russian examples, it showed for how long they have seen the west as enemies and conducted hostile acts.