The questions being asked in wake of crippling cyber attack

Questions are being asked of the NHS, the Government and international security services in the wake of Friday's crippling cyber attack.
The NHS was badly affected by the cyber attack last week... but should it have been prevented.The NHS was badly affected by the cyber attack last week... but should it have been prevented.
The NHS was badly affected by the cyber attack last week... but should it have been prevented.

Here we look at what lessons could be learned from the ransomware crisis.