Largest data breaches

Jan. 1, 2015 - Oct. 1, 2018

03/13/2015 Anthem, a health plan. 78.8 million people were affected in a hacking/IT incident. Network servers were targeted.

03/17/2015: Premera Blue Cross , a health plan. 11 million people were affected in a hacking/IT incident. Network servers were targeted.

09/09/2015: Excellus Health Plan, a health plan. 10 million people were affected in a hacking/IT incident. Network servers were targeted.

07/17/2015: UCLA Health, a healthcare provider. 4.5 million people were affected in a hacking/ IT incident. Network servers were targeted.

07/23/2015: Medical Informatics Engineering, a business associate. 3.9 million people were affected in a hacking/IT incident. EHRs and network servers were targeted.

08/03/2016: Banner Health, a healthcare provider. 3.6 million people were affected in a hacking/IT incident. Network servers and other locations were targeted.

08/09/2016: Newkirk Products, a business associate. 3.5 million people were affected in a hacking/ IT incident. Network servers were targeted.

03/04/2016: 21st Century Oncology, a healthcare provider. 2.2 million people were affected in a hacking/IT incident. Network servers were targeted.

07/30/2018: UnityPoint Health, a healthcare provider. 1.4 million people were affected in a hacking/IT incident. Emails were targeted.

05/20/2015: CareFirst Blue Cross and Blue Shield, a health plan. 1.1 million people were affected in a hacking/IT incident. Network servers were targeted.