374,000 Duke Energy customers may have had their personal information exposed.
According to Duke Energy, a third-party vendor experienced a breach impacting 1.6 million customers.
TIO Network's Global Express announced the compromised data on Friday. Personal information like names, addresses, Duke account numbers, banking information or payments may have been compromised.
The breach impacts customers who paid bills at kiosks or walk-in locations run by TIO Networks. The kiosks are typically located in convenience stores and supermarkets.
Duke Energy representatives said customers affected are concentrated in North Carolina and South Carolina.
TIO Networks will be sending a letter to any customer whose information may have been compromised.