Kaiser Permanente reports a data breach impacting 13.4 million members and patients.

Personal information was unintentionally shared with third-party vendors, including Google and Microsoft Bing.

Data exposed includes IP addresses, user names, and health-related search terms; however, financial details were not affected.

Kaiser has taken steps to eliminate the problematic technologies and bolster security measures.

Widespread privacy concerns are underscored by findings that 96% of US hospital websites share user data with third parties.

No evidence of data misuse has been found, but Kaiser is alerting individuals and advising vigilance.