> It sounds like a spy novel because spies spy on people who use regular, everyday hardware. A rooted iPhone is an extremely useful tool to that end.

Do you know of any instances where this happened with devices that can be rooted? (Computers, most Android phones, iPhones vulnerable to Checkm8)

Barton Gellman wrote about this very thing happening to his iPad (remote jailbreak/root) when he was working with Snowden, in his book Dark Mirror.

The leveraging of Android malware for espionage (corporate and military both) is well-documented in the media.