It doesn't even have to be anything nefarious. For example just tracking network traffic (amount, not content) would be a good signal for a competitor (like Ama

It doesn't even have to be anything nefarious. For example just tracking network traffic (amount, not content) would be a good signal for a competitor (like Amazon) to monitor. If supplier A started getting a lot more network traffic from Walmart IP addresses and supplier B less, then that's a tell that someone could be interested in.