Albuquerque, N.M.-based Presbyterian Healthcare Services began mailing letters to 183,000 patients Aug. 2 notifying them of a data breach that may have exposed their personal information, according to the Albuquerque Journal.
An employee at the nonprofit health system fell victim to a phishing attack May 9. Presbyterian became aware that an unauthorized third-party had gained access to the email account on June 9.
Patient information that may have been affected included names, dates of birth, Social Security numbers and other types of information. Presbyterian is unaware of any misuse, reports the Albuquerque Journal. The health system also said that the hackers did not gain access to its EHR or patient billing information.
Since the incident, Presbyterian has added additional security measures to protect its email system. Additionally, the health system will continue to conduct its annual security training for employees.