In this context, the malware hackers are probably going to save lives in the future by setting a modern precedent for negligence at hospitals and it systems will be updated. Surely they should be patted on the back for such efforts?
By that measure, hijackers who shoot some passengers or crash an aircraft might 'save lives' by motivating the implementation of more rigorous security measures at an airport. I think this is patently absurd.
You could make this same argument about every criminal act.