Fast food company BurgerFuel says it was targeted by an illegal card copying operation at the same time tens of thousands of dollars was taken from people's bank accounts in Auckland.
Four Canadian men appeared in court on Tuesday charged with dishonestly obtaining 10 eftpos key pads for the purpose of stealing money,
Burger Fuel says its store on Queen Street in central Auckland had an eftpos pinpad tampered with on March 24.
Spokesperson Alexis Lam says they do not yet know if any of their customers have had money taken from their accounts, but they are investigating.
Meanwhile, more cases of so-called skimming have emerged, with Kiwibank saying about 70 customers have had tens of thousands of dollars taken from their accounts.
The BNZ says about 100 of its customers have also been affected, with about $30,000 in total taken from their accounts.