Blue Shield of California Confirms Largest Health Care Data Breach of 2025

"Lansing, Michigan, USA - March 14, 2012: The Blue Cross Blue Shield location in Lansing, Michigan. Founded in 1929, the Blue Cross Blue Shield Association is a network of insurance organizations that insure almost 100 million Americans."

According to a recent report by TheStreet.com, Blue Shield of California has confirmed the largest health care data breach of 2025. The breach involved the unintended sharing of protected health information (PHI) due to a misconfigured implementation of Google Analytics.