More than 10,000 appointments were cancelled at the two London NHS trusts that were worst affected.
Around 170 patients have suffered harm as a result of a cyber attack on blood services at London hospitals and GP surgeries, reports suggest.
Pathology services provider Synnovis was the victim of a ransomware attack by a Russian cyber gang in June last year.
As a result more than 10,000 appointments were cancelled at the two London NHS trusts that were worst affected.
And a significant number of GP practices in London were unable to order blood tests for their patients.
Now the Health Service Journal (HSJ) has reported that there were nearly 600 “incidents” linked to the attack, with patient care suffering in 170 of these.
Cybercriminals behind attacks disrupting at least five London hospitals leaked nearly 400 gigabytes of data, which reportedly included blood test information.
Qilin ransomware started leaking data stolen from England National Health Service (NHS) partner Synnovis labs. According to reports from the BBC, the data includes patient names, dates of birth, NHS numbers, descriptions of blood tests, and other information.