Police on Tuesday arrested a former employee of a Tokyo medical recruitment agency on suspicion of illegally copying the personal data of around 17,000 doctors and nurses . Kengo Mikami , 36 , is suspected of copying the confidential information on or around May 30 , 2012 , while working as a systems engineer for the company now called MRT Inc. , investigative sources said . The data , copied from an online storage service , included names , addresses , dates of birth , academic records and details of workplaces . ;