The WannaCry ransomware at attack caused chaos as it affected many organizations, causing major disruptions. However, according to researchers, the danger is not over. are Healthcare systems still vulnerable to cyberattacks that could put the safety of millions of patients risk 
The National Health Service in England is still vulnerable to WannaCry ransomware and other attacks, so it should take steps to prevent such incidents.
A report from the Institute for Global Health Innovation, Imperial College London, explains that the main reasons why hospitals are vulnerable are the use of old IT systems, lack of investment in security and a lack of security.
An attack could cause major problems, such as stealing patient data , blocking doctors' access to patient records, and stopping life-saving medical equipment or devices from functioning properly.
According to the researchers, investment in security is urgently needed. The National Health Service should include more security experts and modernize its systems. It is also necessary to separate the networkso that the entire system is not infected in the event of a virus.
Furthermore, the introduction of new technologies, such as robotics, artificial intelligence and modern medical devices, will also bring changes to security. Security must be designed based on new technologies.
The National Health Service was one of the victims of the WannaCry attack in 2017. Health systems were affected, resulting in thousands of appointments being cancelled and thousands of patients being transferred to other hospitals. The total cost of the WannaCry attack on the National Health Service is estimated at around £92 million.
The report's lead author, Dr. Saira Ghafur, said: "Since the WannaCry attack in 2017, awareness of the risk has increased significantly. However, we need more initiatives and improved practices to address the risks."
One of the biggest problems facing the NHS is a lack of funding. Politicians and doctors are calling for a digital transformation programme, but there is little money, although in April last year the government promised £150m to boost security.
