Ireland's health service hit by 'significant' ransomware attack
By Patrick Reevell
Ransomware attack disrupts Irish health services
By Rory Carroll
Irish health service hit by 'very sophisticated' ransomware attack
By Padraic Halpin & Conor Humphries
Bitcoin ransom will not be paid following cyber attack on HSE computer systems
By Paul Cullen, Sarah Burns & Conor Lally