Tim Cook’s refusal to help FBI hack iPhone is validated by ‘WannaCry’ attack
The reason the attack happened to including British National Health Service hospitals was because they didn't follow manufacturer's instructions (in this case Microsoft) and upgrade their Windows XP software to Windows 10.The only people to blame are those that don't follow manufacturers instructions.They were warned ahead of time.  There were even news reports about this.Target and Home Depot both had credit card hacks precisely because they did not follow manufacturer (again Microsoft) instructions of upgrading Windows XP embedded to a supported version of the OS.I don't understand how hospitals can get accredited if their IT systems are not up-to-date and verified by cybersecurity experts.  Since the companies and the NHS can't be counted on to follow manufacturer instructions, this is extremely important.May 11, 2017: British Medical Journal: The hackers holding hospitals to ransom - Hospitals need to be prepared to avoid shutdowns
http://www.bmj.com/content/bmj/357/bmj.j2214.full.pdfAlso: Hospital accreditation
http://www.uktreatment.com/why-the-uk/hospital-accreditation...EDIT:  The computer systems are capital equipment and like any other form of capital equipment (eg, vehicles in the motor vehicle pool) they must be maintained.  Complex machines undergo changes over the life of the equipment and manufacturers issue updates (eg, field change orders) that should be followed by the purchasers of the equipment.Regarding proper cybersecurity, that would include hardware upgrades since later Intel CPUs incorporate hardware that assist with proper security that is taken advantage of by later versions of the Microsoft OS.The problems of hospitals both in the US and in Britain were because of a refusal to follow the manufacturer's (Microsoft's in this case) instructions.Those familiar with the hacks of Target and Home Depot would know that they were hacked because Target and Home Depot refused to follow Microsoft's instructions to upgrade their point of sale software from unsupported Windows XP embedded to a later, supported version of the OS.