Staples is looking into a potential credit card data breach and has been in touch with law enforcement officials about the issue.

The office supplies retailer said Tuesday that if it turns up any data discrepancies during its investigation, customers won't be responsible for fraudulent activity on their credit cards as long as it is reported in a timely manner.

"We take the protection of customer information very seriously, and are working to resolve the situation," spokesman Mark Cautela said in a statement.

Staples is the latest store to investigate a possible data breach. A similar breach hit Target last November, impacting 40 million credit and debit card accounts. Neiman Marcus, Home Depot, Michaels, PF Chang's, Jimmy John's, UPS, Dairy Queen and Kmart have also experienced data breaches.

Shares of Staples Inc., based in Framingham, Massachusetts, slipped 3 cents to $12.27 in midday trading. Its shares have fallen 23 percent over the past year.

The credit card breaches are part of a larger scam to steal credit card information. Cyber intelligence experts say hackers used malware to infiltrate point of sale systems at store registers. In all of the cases, credit and debit card numbers were stolen, but not PINs or social security numbers.

Retailers, banks and card companies have responded to the breaches by speeding the adoption of microchips in U.S. credit and debit cards. That technology helps makes transactions more secure.