"GameStop recently received notification from a third party that it believed payment card data from cards used on the GameStop.com website was being offered for sale on a website," a company spokesman wrote. "That day a leading security firm was engaged to investigate these claims. Gamestop has and will continue to work non-stop to address this report and take appropriate measures to eradicate any issue that may be identified."
Shares of GameStop were slightly higher during afternoon trading on Friday.
(GameStop stock is held in the Dividend Stock Advisor portfolio. See all of the holdings with a free trial.)
(What will move markets this quarter and how should investors position themselves ahead of time? Jim Cramer sat down with four of TheStreet's top columnists recently to get their views. Click here to listen to his latest Trading Strategies roundtable with them and read their advice for stocks, bonds, forex and gold.)