Hacking a Unmanned surface vehicle(USV)
 

Just a strange hunch,

Hacking a Unmanned surface vehicle(USV) could be a new challenge in the future.

Is there a case? Any thoughts?

Yes it sounds fun
 

Yes it sounds fun, possible options are bluetooth/wifi exploits or maybe physical UART/etc plugs.

It's already being researched. It's not just of public interest as yet. Imagine capturing drones for your own advantage.

Note that a drone is an Unmanned Aerial Vehicle (UAV) not a USV.

I imagine electronic warfare based methods will be the method of choice in the battlefield. Physical approach is unwise or dangerous, the wireless communication protocol will certainly be encrypted and such. There are directed energy weapons that could in theory manipulated voltage or currents in precise places on the electronics to take control. Of course these days what is publicly known is jamming methods, both for electronics and communication. But takeover would be certainly more advantageous