A software security expert say hospitals had left themselves open to cyber attacks because of poor practices in the NHS.
Andrew Avanessian, Vice Chair of Technology at Manchester based Avecto says the attack raises the question is there enough funding in the NHS to take cyber security seriously.
He's been telling ITV News Correspondent Elaine Willcox about some of the simple steps the NHS is failing to take to guard against malware attacks.
More top news
Temperatures take a dip over the next few days and nights. Cold wind from the east sets in by the weekend
Wigan's Will Grigg has spoken of his career-high moment after scoring the goal to knock Man City out of the FA Cup.
Prize in memory of Caroline Aherne, who died in 2016