The cost of repairing damages done to the Irish national health service by a ransomware attack on Friday will “no doubt” run into “tens of millions,” the health service boss has said. Ireland’s Health Service Executive (HSE) shut down its IT systems on Friday morning as a “precautionary” measure after it was hit by a ransomware attack. The system’s Chief Operations Officer, Anne O’Connor, told Newstalk radio on Sunday that many cancer treatment sessions, X-rays, and other radiology appointments had been canceled, describing perhaps the worst impact to date on a healthcare system from ransomware. The impact of the attack on services is expected to last throughout this week and beyond, with thousands of patients facing cancelled appointments and delays. Speaking to Ireland’s national broadcaster RTÉ on Monday, HSE Chief Executive Paul Reid said that even when the systems are back up, it’ll take awhile to know how stable the …