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U.S. consulting firm Greylock McKinnon Associates ( GMA ) reveal a data rift in which hack steal as many as 341,650 Social Security number .

The datum breach was disclosed on Friday onMaine ’s government web site , where the state posts data point gap notification .

Inits datum falling out notice send by post to affected victims , GMA read it was hit by an unspecified cyberattack in May 2023 and “ right away took stair to mitigate the incident . ”

GMA allow economical and judicial proceeding reenforcement to company and U.S. government way , including the U.S. Department of Justice , bring civil judicial proceeding . agree to its data point breach notice , GMA told affected mortal that their personal information “ was hold by the U.S. Department of Justice ( “ DOJ ” ) as part of a civil litigation matter ” supported by GMA .

The reasons and fair game of the DOJ ’s polite judicial proceeding are not known . A spokesperson for the Justice Department did not respond to a request for comment .

GMA articulate that person notified of the data breach are “ not the subject of this investigation or the associated judicial proceeding matters , ” and that the cyberattack “ does not impact your current Medicare benefits or coverage . ”

“ We consult with third - party cybersecurity specialists to assist with our reception to the incident , and we notified law enforcement and the DOJ . We received verification of which individuals ’ information was affected and obtain their middleman addresses on February 7 , 2024 , ” the business firm write .

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GMA say victim that “ your personal and Medicare information was likely involve in this incident , ” which includes names , date of birth , home address , some medical information and wellness policy information , and Medicare title numbers , which included Social Security identification number .

It ’s unclear why it took GMA nine months to determine the extent of the breach and advise victims .

GMA , and the business firm ’s outside effectual counselor-at-law , Linn Freedman of Robinson & Cole LLP , did not straight off reply to a petition for comment .