(KMOV.com) -- Schnucks announced that it has "found and contained" the issue behind the reports of unauthorized access to payment card information at the Maryland Heights-based supermarket chain.
"After an extensive review, we confirmed that Schnucks was the victim of a cyberattack," said Chairman and CEO Scott Schnuck in a statement released Saturday.
Now that the issue has been "identified and contained," the investigation will turn to determining how long the issue existed and which stores were affected.
Scott Schnuck assured customers that Schnucks is "cooperating with law enforcement, the Missouri Attorney General's Office, and the credit card companies to determine the scope and magnitude of this crime."
For Schnucks shopper Kelly Ellison, the security breach meant she was out roughly $850.
"It's disturbing that that would happen, and that makes me wonder...none of your information is safe," Ellison said.
The computer forensic firm that Schnucks hired found evidence of computer code that would capture the magnetic stripe data on the back of the payment cards.
The release states that "the securities enhancements we have implemented in the last 48 hours are designed to block this attack from continuing."
Schnucks advises any customers that suspect their cards may have been compromised to immediately contact their credit or debit card company.
Stay tuned to News 4 for further details in the investigation.