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Dutch Lab Cancer Screening Hack Balloons to 941,000 Victims

In Data Breach News, Healthcare
September 04, 2025

BankInfoSecurity reports:

With ransomware gang Nova threatening to leak patient data on the darkweb, a Dutch laboratory that performs cervical cancer tests for a government screening program is mum about the ransom negotiations, but it says the cyberattack in July has affected 941,000 patients – nearly double the initial estimate of 485,000 people.

Bevolkingsonderzoek Nederland, or BVO NL, a research agency which oversees the national Population Screening Netherlands programs for screening three types of cancer – breast, colon and cervical – in a statement Friday said that Clinical Diagnostics NMDL, the lab that handles the program’s cervical cancer screenings, has informed the agency that another 230,000 patients have had their information “leaked” in the lab’s recent hack (see: Data Theft from Dutch Cancer Screening Lab Affects 485,000).

Read more at BankInfoSecurity.

This was one of the more confusing ransomware incidents. Although it initially appeared that Eurofins had paid the threat actors, the threat actors then demanded more money after claiming that someone had gone to the police. The following day, another notice was posted on the threat actors’ dark web leak site to say that data had been deleted and that the previous post was just a warning to Clinical Diagnostics. For more on the confusing demands and situation, see DataBreaches.net.