The "plant" modifier is what changes the entire context.
A plant doesn't need to scan the whole network; it simply waits for the right data to pass through it.
But the true lesson extends beyond one domain. The "pwnhack.com plant" phenomenon demonstrates how modern threats blend hardware, software, and psychological misdirection. Whether you run a nuclear facility or a tomato greenhouse, the question is no longer if someone will try to plant a backdoor—but what they will name it.