Cowboys Casino is warning that some client, employee and corporate information may have been compromised following a recent cyber attack on their computer system.

Tyrone Waite, general manager of Cowboys Casino, said the company learned of the incident earlier this week.

“Basically we had somebody notice some unusual activity inside of our system on Monday morning, an operational manager, and he contacted me, and I immediately contacted our IT third party security people,” Waite said. “They said there was an unauthorized access into your system.”

The IT experts later told Cowboys Casino that their computer systems were secured.

Now management are working to notify staff, people on their customer list, and members of their loyalty program whose information – which could include names, contact information and addresses – may have been compromised.

The extent or cause of the breach is not yet known.