The study covers 1,461 healthcare breaches disclosed to U.S. officials from Oct. 21, 2009 to July 1, 2019. The breaches reportedly included the sensitive medical information of 2.4 million patients, the less sensitive medical information of almost 50 million, the credit cards and banking accounts of 49 million, and the social security numbers, driver’s license numbers and birthdates of about 150 million.