Modesto-based Save Mart is warning customers at several of its Bay Area supermarkets that their personal banking information may have been compromised.
The company issued a news release Wednesday saying that while doing routine maintenance, store employees found credit, debit card readers that had been tampered with in the self-checkout lanes of 19 Lucky stores and one Save Mart store.
Its stores in San Jose, two Luckys in Fremont and one each in Santa Clara, Milpitas, Alameda, El Cerrito, Pinole, Redwood City and Mountain View were affected, as was a Save Mart in Watsonville.
The company said the tampered card readers were replaced and that enhanced security was added to all of its 234 stores.
"We are not aware nor have we been notified of any reports that customer accounts were compromised," Alicia Rockwell, public affairs director for Save Mart Supermarkets, wrote in a release. "The appropriate authorities have been notified of this situation and Consumer Notices have been posted at credit/debit terminals in the affected stores as well as placed on our websites."
Save Mart Supermarkets advised customers who have used the self-checkout lanes in the affected stores monitor their respective bank accounts.
"We sincerely regret any inconvenience or concern this may have caused our customers, especially during the holiday time." Rockwell wrote. "We take seriously our responsibility to always keep our customers informed of any issues important to them."