PARIS — A family-owned restaurant has been the victim of a data breach, according to co-owner Tisha Gilbert.

Gilbert said she learned of the breach at Market Square Restaurant on Monday when Maine State Police contacted her.

She said she’s had some problems with credit cards going through in the past week, and regular customers who said they’d been issued new credit cards after their cards had been compromised.

Gilbert said her first assumption was that Hannaford was hacked again as it was five years ago.

“It’s something that you don’t think can ever happen to you,” she said.

On Saturday, a customer said a newly issued card had been compromised.

On Monday morning, Norway Savings Bank contacted the restaurant and said there might be a breach. They said she could stop taking credit cards.

“I stopped immediately,” Gilbert said.

On Tuesday, investigators from Maine State Police and the U.S. Secret Service came to the restaurant, she said. There’s a new, secure credit card machine in place, she said.

The restaurant breach is thought to have happened three to four weeks ago.

On Thursday, she announced the breach on the restaurant’s Facebook page to notify customers.

Gilbert said she was told other businesses around New England may have been compromised and that the breach isn’t believed to have originated in her restaurant. She said she was told not to say much about the case, but said she’s speaking with the Attorney General’s Office on Monday.

Maine State Police said the investigation was being conducted primarily by the Secret Service. An agent at the Secret Service office in Portland declined to comment on the investigation.

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