LONDON –  Hospitals in the UK were crippled by a “large-scale” cyber attack yesterday that forced operations to be canceled and ambulances to be diverted. Health workers reported being locked out of their systems and seeing messages demanding ransom payments to regain access. NHS England described the incident as a “ransomware” attack. At least 16 organizations connected to the National Health Service (NHS) in England reported being affected. “The investigation is at an early stage but we believe the malware variant is Wanna Decryptor”, NHS Digital said in a statement. “At this stage we do not have any evidence that patient data has been accessed. We will continue to work with affected organisations to confirm this.”(CNN)[+]