The University of Chicago Medicine scrambled to secure a database containing information on patients as well as existing and potential financial donors, after a researcher discovered that a misconfiguration left nearly 1.68 million records exposed to the public.

Bob Diachenko, cyber threat intelligence director at Security Discovery, said in a June 3 company report that he found the open Elasticsearch database last May 28 while using the Shodan search engine. The 34GB cluster, named "data-ucmbsd2" reportedly contained 1,679,993 records with information that included individuals' names, birth dates, addresses, phone numbers, email addresses, genders, marital statuses, and financial status, as well as communication notes.

Certain records also contained the names and clinical areas of physicians who treated patients listed in the database, UChicago Medicine acknowledged in its own June 3 press release. However, the database did not include information from patients' medical records, nor did it hold financial information or Social Security numbers, the school asserted.

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