The Northern California division of Kaiser Permanente is notifying about 5,100 patients that protected health information was on a server found in February 2014 to be infected with malicious software.
In a letter to patients, the organization says it believes the server was infected in October 2011. Kaiser removed the server--used to store research data--and confirmed other servers were not affected and appropriately secured. We currently have no information that any unauthorized person accessed the information on the server, according to the patient letter. However, the malicious software broke down the servers security barriers so we are investigating and responding with a very high level of caution and concern. We are very sorry that this happened.
Information on the server included patient name, date of birth and gender, and also may have included address, race-ethnicity, medical record number, lab results associated with research, and patient responses to questions related to research studies in which they participated. Social Security numbers and data from Kaisers electronic health record were not held on the server.
The new breach soon will be listed on the HHS Office for Civil Rights website of major security breaches affecting 500 or more individuals, and it will be Kaisers fourth posting on the site.
In late 2013, a missing flash drive from the nuclear medicine department at Anaheim Medical Center resulted in notifications sent to about 49,000 patients. Also in 2013, Kaiser notified 647 patients after learning of unauthorized access/disclosure of the EHR. In late 2009, the organization notified about 15,500 patients following the theft of an electronic portal device.
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