San Francisco Chronicle

Kaiser Permanente breach might affect 13.4M members

- By Aidin Vaziri Catherine Ho contribute­d to this report. Reach Aidin Vaziri: avaziri@sfchronicl­e.com

Kaiser Permanente reported a data breach Monday that could affect millions of its customers.

The Bay Area health care giant said that when members and patients accessed its websites or mobile applicatio­ns, data sent to third-party technology companies such as Google and X (formerly Twitter) via web cookies might have included personal informatio­n.

The informatio­n mainly consisted of IP addresses and search terms used while logged into a Kaiser Permanente account or service. The data did not include user names, passwords, Social Security numbers, financial account details or credit card numbers.

Kaiser indicated that approximat­ely 13.4 million current and former members are being notified about the breach.

“Kaiser Permanente is not aware of any misuse of any member’s or patient’s personal informatio­n,” the company said in a statement. “Neverthele­ss, out of an abundance of caution, we are informing approximat­ely 13.4 million current and former members and patients who accessed our websites and mobile applicatio­ns. We apologize that this incident occurred.”

Kaiser Foundation Health Plan revealed in a filing on April 12 with federal authoritie­s that there was a disclosure or unauthoriz­ed access to its network server.

The company added it was conducting an internal investigat­ion into the breach.

Last year saw a record number of 725 significan­t security breaches in the health care industry, according to the HIPAA Journal.

One of the most disruptive hacks in the health care industry, the February cyberattac­k on the payments processing vendor Change Healthcare, has already cost the company $872 million, parent UnitedHeal­th said in its firstquart­er earnings report. The breach shut down parts of Change Healthcare’s electronic operations and rendered hundreds of hospitals and other medical practices around the country unable to collect payments or pay their bills.

 ?? Jessica Christian/The Chronicle 2023 ?? An informatio­n breached at Kaiser Permanente mainly consisted of IP addresses and search terms.
Jessica Christian/The Chronicle 2023 An informatio­n breached at Kaiser Permanente mainly consisted of IP addresses and search terms.

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