Los Angeles-based UCLA Health reported it suffered a cyberattack that compromised the personal information of approximately 4.5 million people.
The health system learned of the attack May 5. According to a Los Angeles Times report, the health system first saw unusual activity in a computer server in October. Initial investigation suggests the cyberattacker had access to UCLA Health's network since September 2014.
The hackers accessed parts of UCLA's network containing protected health information including names, addresses, birth dates, Social Security numbers, medical record numbers, health plan number, Medicare numbers and some medical information.
Currently there is no evidence the cyberattacker accessed or acquired any of the information. UCLA Health is conducting an investigation with the FBI. The investigation is ongoing.
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