We believe it is a Russian group of cyber criminals who call themselves Qilin. St Thomas’ was among a number of London hospitals affected by the cyber attack (Trevor Mogg/Alamy/PA)“It’s particularly damaging in the United States, and where this type of cyber attack is different in terms of its impact from others, is that it does affect people’s healthcare. Regarding patient data, he said: “It’s not really a question of data in this one, it’s a question of the services. NHS officials said they are working with the National Cyber Security Centre to understand the impact of the attack. “Urgent tests will have to be managed onsite.