Hackers have stolen personal and medical information from nearly 500,000 participants in the Netherlands' cervical cancer screening programme. The attack targeted the NMDL laboratory in Rijswijk between 3 and 6 July, but authorities were only informed on 6 August.

Data includes names, addresses, birth dates, citizen service numbers, possible test results and healthcare provider details. For some victims, phone numbers and email addresses were also stolen. The lab, owned by Eurofins Scientific, has suspended operations while a security review occurs.

The Dutch Population Screening Association has switched to a different laboratory to process future tests and is warning those affected of the risk of fraud. Local media reports suggest hackers may also have accessed up to 300GB of data on other patients from the past three years.

Security experts say the breach underscores the dangers of weak links in healthcare supply chains. Victims are now being contacted by the authorities, who have expressed regret for the distress caused.