Sensitive data stolen from an NHS provider in a cyber attack has apparently been published online.

NHS England says a criminal group claims it has released patient information hacked from Synnovis, which provides pathology services on blood tests.

Synnovis, which provides services primarily in southeast London, was the victim of a ransomware attack, understood to be carried out by Russian group Qilin, on 3 June.

In a statement on Friday morning, NHS England said: “NHS England has been made aware that the cyber criminal group published data last night which they are claiming belongs to Synnovis and was stolen as part of this attack.

“We understand that people may be concerned by this and we are continuing to work with Synnovis, the National Cyber Security Centre and other partners to determine the content of the published files as quickly as possible.

“This includes whether it is data extracted from the Synnovis system, and if so whether it relates to NHS patients.

“As more information becomes available through Synnovis’ full investigation, the NHS will continue to update patients and the public.”

The cyber criminal group shared almost 400GB of data – including patient names, dates of birth, NHS numbers and descriptions of blood tests – on their darknet site and Telegram channel, the BBC said.

Spreadsheets containing financial arrangements between hospitals and GP services and Synnovis were also published, the BBC reported.

Synnovis said in a statement on Friday morning: “We know how worrying this development may be for many people. We are taking it very seriously and an analysis of this data is already under way.”

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