Physical systems are different from information systems. You can make an impenetrable information system, but not an impenetrable physical system. Physical syst

Physical systems are different from information systems. You can make an impenetrable information system, but not an impenetrable physical system. Physical systems are inherently safe due to their locality, and can benefit from security-by-obscurity. When you hook up a weak information system to a global network where anyone can interact with it, and someone finds a way to break it, perhaps it is worth looking into the systemic weaknesses instead of getting angry about a given attacker.