AI disruption is the change artificial intelligence forces on a business's existing position: the risks it already carries, the plans it has already made, and the assumptions those were built on. It is not a new risk to add to a register. It is a force acting on the entries already there, moving their likelihood, their impact, or the reliability of the safeguards behind them.
That distinction matters because it changes what the sensible response is. If AI were one new risk, the answer would be one new entry with an owner. Because it is a driver of many existing ones, the answer is a re-reading of what you already hold: which entries has it moved, in which direction, and by how much.
It also cuts both ways. The same force making fraud cheaper to run against you is making some of your shelved ambitions newly affordable. A definition of AI disruption that only covers threat is describing half of it.