The British government is investigating how health data volunteered to a charity for research purposes wound up for sale via three vendors on the Alibaba e-commerce site in China. One listing had 500,000 people's data.

The government said medical data of 500,000 people was affected but no personally identifiable information had been made available.

The government said medical data of 500,000 people was affected but no personally identifiable information had been made available.

The government said medical data of 500,000 people was affected but no personally identifiable information had been made available.

Data breach disclosed in UK parliament Thursday saw around 500,000 volunteers’ confidential information advertised for sale on Alibaba.

Data breach disclosed in UK parliament Thursday saw around 500,000 volunteers’ confidential information advertised for sale on Alibaba.