 Personal particulars of 1.5 million SingHealth patients and records of outpatient dispensed medicines for 160,000 of those patients were stolen in a cyberattack between 27 June and 4 July 2018 with the names, National Registration Identity Card numbers, addresses, dates of birth, race, and gender of patients who visited specialist outpatient clinics and polyclinics between 1 May 2015 and 4 July 2018 maliciously accessed and copied.Information relating to patient diagnosis, test results and doctors' notes were unaffected.Information on Prime Minister Lee Hsien Loong was specifically targeted.