BLACK HAWK, Colo. (CBS4) – Personal information could be at risk for gamblers who used credit cards at any of three casinos in Black Hawk earlier this year.

Information from about 300,000 credit and debit cards was stolen from a company that owns casinos across the country.

READ MORE: Cars Spun Out & Abandoned As Winter Storm Grips Denver Metro Area

Three of those casinos are in Black Hawk.

The vice president of Affinity Gaming here in Colorado says their phones have been ringing nonstop since the news got out.

Paul Millar is a frequent casino visitor.

“It just scares me because it’s not like I’m a millionaire, but what I got is all I got. I don’t want to lose it,” said Millar.

Cardholders lost their information after a cyber attack on Affinity Gaming’s computer systems.

The Las Vegas based company owns 11 casinos nationwide including Mardi Gras, Golden Gulch, and Golden Gates in Black hawk.

The incident sends a chill through gamblers Joey and Rosemary Torregrossa.

READ MORE: Businesses Near Convention Center Eager For Events: 'It's Our Livelihood'

“I think it’s sad. There’s a lot of people paying the price for it. This is the season of giving not stealing and taking,” said Torregrossa.

Affinity Gaming leaders believe their system was hacked between March 14 and Oct. 16.

They’re urging gamblers who visited any of their 11 casinos during that time to check their credit card statements for suspicious activity.

The vice president of Affinity Gaming in Colorado said the credit card information was compromised during food purchases at the casinos. None were stolen in any gaming transactions.

The company also issued a statement saying “although our forensics investigation is ongoing, outside experts have confirmed that our system has been fully secured and our customers’ payments are protected.”

“It’s going to ruin our economy,” said Millar, “I’m really going to cut back on the use of credit cards. I doubt I’m going to use my debit card anymore.”

The vice president says he hasn’t heard of any victims here in Colorado yet.

MORE NEWS: Union Organizing JBS Mass Vaccination Event: 'It's About Time They Are Prioritized'

But if you think you may have been targeted he suggests calling their hotline at 1-877-238-2179 for more information.