Blue Shield of California leaked health data of 4.7 million members to Google

Blue Shield of California disclosed a data leak resulting from a Google Analytics misconfiguration that potentially exposed protected health information for about 4.7 million members to Google Ads and related advertising platforms between April 2021 and January 2024; exposed fields included plan details, location, gender, family size, provider and claim service details, and member identifiers, though SSNs and financial account data were reportedly not exposed.