West Sacramento-based Raley's said Monday that it continues to investigate a cyberattack on its computer systems, following a weekend when some Raley's customers reported unauthorized activity on their personal card-payment accounts.
Raley's publicly disclosed the possibility of a "complex, criminal cyberattack" last Thursday, one week after a credit card company notified the grocer of "suspicious activity" in payment transaction processes.
Raley's said President and CEO Michael Teel ordered an "immediate investigation" of company systems to determine whether attackers obtained personal payment information.
While expressing confidence that consumer information is safe, the grocer last week recommended that shoppers double-check their personal accounts and report anything suspicious.
Since Thursday, a half dozen Raley's shoppers have contacted The Sacramento Bee about problems in their personal card-payment accounts. The consumers said they were alerted by their bank or credit card company, and the accounts subsequently were canceled.
The Facebook page for Raley's also includes accounts of shoppers reporting trouble with their payment cards.
Customers reported attempts of unauthorized card use at locales all over the map - in California, Ohio, New York and Alabama, to name just a few.
Fraud experts said that while those instances could indeed be linked to a cyberattack on the West Sacramento grocer's systems, they're not proof positive. Also, they don't provide a clear view of the depth of such an attack.
"While our investigation continues, we continue to urge our customers to monitor their credit and debit transactions and contact their bank or credit card company to report any suspicious activity," John Segale, a spokesman for Raley's, said Monday. "Our call center remains open and staffed from 7 a.m. to 10 p.m. every day.
"While customer calls to our dedicated response team spiked (last) Thursday evening, we are still receiving calls, and we remain committed to answering any customer questions."
The call center number is (800) 925-9989. More information and updates also are being posted at www.raleys.com.
Raley's noted that it does not collect Social Security or drivers' license numbers with payment card transactions.
While acknowledging a cyberattack, Segale said "we still don't know whether it was successful and where it occurred."
Raley's has 128 stores in Northern California and northern Nevada: 78 Raley's stores, 20 Bel Air Markets; 22 Nob Hill Foods supermarkets; and eight Food Source warehouse-format stores.
Call The Bee's Mark Glover, (916) 321-1184.