Landry's Inc is notifying customers that some popular restaurants in the Milwaukee and Chicago area have had their data breached. 

Customers are being notified to monitor their credit and debit card accounts, after a data breach affecting more than 500 restaurants nationwide.

Landry’s Inc., based in Houston, owns McCormick & Schmick’s, Mitchell's Fish Market,Rainforest Cafe,  and several other restaurant chains across the country.

Beginning in March 2014, and ending last December, hackers breached the company’s credit card system, stealing account numbers on magnetic strip cards, and using the information to make large purchases at Best Buy, Target, and other retailers.

The security breach these restaurants in the Milwaukee and Chicago area:

Milwaukee Area:

McCormick & Schmicks, Wauwatosa from May 2014 to March 2015 and from May 2015 to December 3, 2015

Mitchell's Fish Market, Brookfield,from May 2015 to November 23, 2015

Chicago Area:

Bubba Gump Shrimp, Chicago , from May 8, 2015 to Dec. 3, 2015

Claim Jumper, Lombard, from May 5, 2015 to Dec. 3, 2015

Mastro’s Steakhouse, Chicago, from May 5, 2015 to Dec. 3, 2015

McCormick & Schmick’s, 41 E. Chestnut St., Chicago, from May 9, 2014 to Dec. 3, 2015

McCormick & Schmick’s, 1 E. Upper Wacker Dr., Chicago, from May 9, 2014 to March 14, 2015; and from May 8, 2015 to Dec. 3, 2015

McCormick & Schmick’s, Oak Brook, from May 9, 2014 to March 14, 2015; and from May 8, 2015 to Dec. 3, 2015

Morton’s, 65 E. Wacker Pl, from May 10, 2014 to March 14, 2015; and from May 8, 2015 to Dec. 3, 2015

Morton’s, 1050 N. State St., from May 10, 2014 to March 14, 2015; from May 8, 2015 to Dec. 3, 2015

Morton’s, Schaumburg, from May 5, 2015 to Dec. 3, 2015

Rainforest Café, Chicago, from May 8, 2015 to Dec. 3, 2015

Rainforest Café, Schaumburg, from May 8, 2015 to Dec. 3, 2015

The company urged customers to closely monitor their credit and debit card statements. If you think there was an unauthorized purchase, you should contact your bank.

Landry’s set up a toll-free number for customers with questions about the breach: 877-238-2151.