1. Anthem Blue Cross (2015)
• Records breached: 78.8 million
• Source of breach: State sponsored
2. Korea Pharmaceutical Information Center/SK Telecom (2015)
• Records breached: 43 million
• Source of breach: Malicious insider
3. Korean Medical Association, Association of Korean Medicine and Korean Dental Association (2014)
• Records breached: 17 million
• Source of breach: Malicious outsider
4. Premera, Lifewise (2014)
• Records breached: 11.25 million
• Source of breach: Malicious outsider
5. UCLA Health System (2015)
• Records breached: 4.5 million
• Source of breach: Malicious outsider
6. Community Health Systems (2014)
• Records breached: 4.5 million
• Source of breach: Malicious outsider
7. Medical Informatics Engineering/NoMoreClipboard/South Bend Medical Foundation/Louisville metro/Margaret Mary Community Hospital (2015)
• Records breached: 3.9 million
• Source of breach: Malicious outsider
8. GE Healthcare (2014)
• Records breached: 2.4 million
• Source of breach: Malicious insider
9. Texas Health and Human Services (2014)
• Records breached: 2 million
• Source of breach: Malicious insider
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