US healthcare marketplaces shared citizenship and race data with ad tech giants

Bloomberg’s investigation found that pixel trackers on nearly 20 U.S. state health insurance marketplaces sent applicants’ information — including sensitive health and demographic details and contact identifiers — to major advertising and tech companies (Google, Meta, TikTok, LinkedIn, Snap). The report highlights privacy risks from misconfigured trackers on government sites, notes that some jurisdictions paused or removed trackers after disclosure, and emphasizes the potential scale of exposure given millions of marketplace users.