Kaiser Permanente Data Breach Impacts 13.4 Million Patients

US healthcare giant is warning millions of current and former patients that their personal information was exposed to third-party advertisers.

US healthcare giant Kaiser Permanente is notifying 13.4 million current and former patients that their personal information was exposed to third-party advertisers.

Kaiser Permanente said trackers previously installed on its websites and mobile applications “may have transmitted personal information to third-party vendors Google, Microsoft Bing, and X (Twitter) when members and patients accessed its websites or mobile applications.”

In a statement sent to SecurityWeek, Kaiser Permanente said the exposed information may have included names, IP addresses, and terms users searched for in the health encyclopedia. 

“Information that could indicate a member or patient was signed into a Kaiser Permanente account or service, information showing how a member or patient interacted with and navigated through the website and mobile applications” was also compromised, the company said.

“No usernames, passwords, Social ...