Nearly 70,000 Dutch women have registered for a mass claim against Clinical Diagnostics laboratory following a data breach affecting 485,000 cervical cancer screening participants. Law firms report overwhelming response as regulatory investigations into GDPR violations continue.

Massive Response to Clinical Diagnostics Data Breach
Nearly 70,000 women have registered for a potential mass claim following the massive data breach at Clinical Diagnostics laboratory in Rijswijk, Netherlands. The staggering number of registrations represents approximately one-tenth of the total 485,000 women affected by the security incident.
Rapid Growth in Claim Registrations
The response has been overwhelming, with registrations skyrocketing from just 3,000 yesterday to nearly 70,000 today. DHKV Advocaten reports approximately 18,000 registrations, while Van Diepen Van der Kroef law firm has received around 50,000 applications, with numbers continuing to rise rapidly.
Legal Grounds for Collective Action
Advocate Michaël Dol of Van Diepen Van der Kroef expressed astonishment at the response: "I didn't know what I was seeing when I reviewed the registrations this morning. The many registrations in such a short time show that the data breach is hugely significant for women."
The law firms are planning to discuss potential collaboration on Monday to create a unified platform for all affected women. The mass claim would be based on three main allegations of negligence against Clinical Diagnostics: delayed breach notification, excessive data collection, and inadequate security measures.
Regulatory Investigations Underway
The Dutch Data Protection Authority (Autoriteit Personsgegevens) has launched an investigation into potential GDPR violations, while the Healthcare and Youth Inspectorate is examining whether healthcare institutions took sufficient measures to ensure data security. Legal proceedings are expected to await the outcomes of these official investigations.
Complex Legal Challenges
Privacy law expert Sven van Dooren of Louwers IP&Tech Advocaten cautioned that discussing compensation at this stage is "premature." Claims for non-material damages, such as stress or anxiety, present particularly complex legal challenges under Dutch and EU privacy laws.
Scope of the Breach
The data breach, disclosed two weeks ago, involved sensitive medical information from 485,000 women who participated in the national cervical cancer screening program. The stolen data includes results from Pap smears conducted at doctors' offices and self-test kits, representing one of the largest medical data breaches in Dutch history.