UK Biobank Health Data of 500,000 Members Offered for Sale Online
Confidential health data, including DNA, from 500,000 UK Biobank volunteers was offered for sale online in China following an internal data breach.
Key points
- Internal data breach affecting 500,000 UK Biobank volunteers.
- Confidential health data, including DNA, offered for sale online in China.
- Exposed data included gender, age, birth details, socioeconomic status, lifestyle habits, and biological sample measures, but no direct identifiers like names or addresses.
Connected intelligence
Signal brief
Follow the organization, likely method and potential impact to explore connected Shadow Tier intelligence.
Organization
- Published
- Apr 23, 2026
- Updated
- Jul 3, 2026
- Confidence
- High
- Evidence
- 5 sources
Structured assessment
Signal analysis
This analysis groups the signal by industry, likely incident action and impacted security area. It helps compare this signal with other published signals without treating the labels as final determinations.
Threat source
Watch exposure paths that could affect data, operations or third-party trust.
Business impact
- Impact area
- Confidentiality
- Likely asset
- User or customer data
Mentioned entities
Quick context
Questions about this signal
What happened in this signal?
Confidential health data, including DNA, from 500,000 UK Biobank volunteers was offered for sale online in China following an internal data breach. The British government confirmed the incident on April 23, 2026. The data was found listed on Alibaba, but names, addresses, contact details, or telephone numbers were not included. The information included gender, age, month and year of birth, socioeconomic status, lifestyle habits, and measures from biological samples. Access for three Chinese research institutions, which had legitimately downloaded the data, was revoked.
When was this signal reported?
Shadow Tier lists Apr 23, 2026 as the signal date.
Which organization is connected to this signal?
Ukbiobank is the organization connected to this public signal.
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