SCARBOROUGH, Maine — At least two class-action lawsuits were filed last week on behalf of customers of Hannaford Bros. here and sister chain Sweetbay whose credit card numbers were put at risk after security breach. Philadelphia-based Berger & Montague said it filed suit in U.S. District Court in Portland, Ore., alleging that the chains, owned by Brussels-based Delhaize Group, did not provide adequate security. A similar lawsuit was filed by Bangor, Maine-based law firm Lanham Blackwell listing as plaintiffs Melinda J. Ryan of Bangor and “others similarly situated.” That suit also alleges that “Hannaford did not maintain reasonable procedures designed to limit access to this sensitive financial information.” The suits seek unspecified damages. Hannaford said it does not comment on pending litigation.

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