The target of the breach was Advanced, which is owned by private equity companies. It supplies software for about 85 percent of the hotline’s services, according to the Telegraph.
The hackers were part of an organized criminal ground, according to an updated version of the report.
The company’s Adastra system allows call handlers to dispatch ambulances, book urgent appointments or fulfil emergency prescriptions.
Cases in need of an ambulance are being prioritized, the paper cited a source from the National Health Service as saying. The systems could remain offline until August 9.
Simon Short, chief operating officer of Advanced, said a security issue was identified on August 4 and as a precaution the health and care systems were immediately isolated.
The company’s services also extend to care homes and a patient record management system.
Advanced is owned by Vista Equity Partners and BC Partners.