2016 Northern Lincolnshire NHS — ransomware, 2,800 cancelled 2016 Unknown records affected Share on X Data compromisedHospital systems Technical writeup Ransomware attack. 2,800 appointments cancelled. Preceded WannaCry. Root cause Ransomware Referenceshttps://www.nao.org.uk/wp-content/uploads/2017/10/Investigation-WannaCry-cyber-attack-and-the-NHS-Summary.pdf