They also say more sophisticated poaching methods are being used, with organised criminal gangs flying in to game reserves by helicopter to kill rhinos, hack off their horns and make a quick getaway.

Researchers hope that by showing off how to hack certain systems, the computer industry will take steps to make infrastructure and consumers safer.

Instead of taking the entire body of a shark back to port, fisherman hack off the animal's most lucrative parts, its fins, and then throw the rest of it away.