Private customer information, including payment card and check information, has been exposed at 34 of 155 Spec's wine and liquor stores, including 21 in the greater Houston area, the company said Tuesday. The attack affected less than 5 percent of Spec's total customer transactions during that period, it said, and the affected locations were smaller neighborhood stores. Spec's is encouraging customers to review their account statements and monitor reports for suspicious activity, Sarver said.