The government of Maine has confirmed over a million individuals had personal information stolen in a data breach earlier this year by a Russia-linked ransomware gang.
In a statement published Thursday, the Maine government said hackers exploited a vulnerability in its MOVEit file-transfer system, which stored sensitive data on state residents. The hackers used the vulnerability to access and download files belonging to certain state agencies between May 28 and May 29, the statement read.
The Maine government said it was disclosing the incident and notifying affected residents as its assessment of the impacted files “was recently completed.”
The statement said the state holds information about residents “for various reasons, such as residency, employment, or interaction with a state agency,” and that the data it holds varies by person.
According to the state’s breakdown of which agencies are affected, more than half of the stolen data relates to Maine’s Department of Health and Human Services, with up to about a third of the data affecting the Maine’s Department of Education. The remaining data affects various other agencies, including Maine’s Bureau of Motor Vehicles and Maine’s Department of Corrections, though the government notes that the breakdown of information is subject to change.
More than 1.3 million people live in the state of Maine, according to the U.S. Census Bureau.