Community Health Plan of Washington data breach affects nearly 400k

A recent data breach affected 381,534 current and former members of Seattle-based Community Health Plan of Washington, The Seattle Times reports.

The nonprofit organization, which provides insurance to Washington's Medicaid members, began informing affected individuals Dec. 21.

The patient information exposed in the breach includes names, addresses, Social Security numbers and health claims information. It does not include health providers' notes on patients. Community Health Plan of Washington COO Marilee McGuire said there is not yet evidence of harm to members.

Community Health Plan of Washington first found evidence of the breach Nov. 7, when an unknown person left a voicemail with the organization. The caller allegedly said there was a weakness in the computer network of the organization that assists Community Health Plan of Washington with technical services. That organization is a subsidiary of NTT Data.

After receiving the voicemail, Community Health Plan of Washington hired a forensic investigator, who confirmed the breach Nov. 30.

Community Health Plan of Washington has set up a call center for members with questions. It is also offering affected individuals a year of free credit monitoring provided by Kroll, a cybersecurity firm.

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