NEW YORK ( TheStreet) -- Popular searches on the Internet include Activision Blizzard ( ATVI) as the company revealed that a hack attack has resulted in stolen account details for millions of players. The company discovered the attack on its Battle.net account management service on Aug. 4. Players' email addresses and information about their security questions and account authenticators were accessed by the hackers. Players from the U.S., Canada, Latin America, Australia, New Zealand and Southeast Asia have all been affected. Activision Blizzard said it does not believe the information stolen would be enough for the hackers to be able to get into Battle.net accounts, but it does encourage players on North American servers to change their passwords. The company said it found no evidence that credit card or billing information had been accessed. Activision Blizzard is the maker of games including World of Warcraft. Players use Battle.net to manage their accounts and login to play various games. OPEC is trending as the group said it may cut its forecast for global oil demand in 2013. While the Organization of the Petroleum Exporting Countries did leave its forecast unchanged Thursday from its estimate last month, the group cited a gloomy outlook for potentially cutting its forecast in 2013. OPEC said the turbulent outlook for the global economy could reduce its forecast by 20% next year. OPEC expects global economic growth to slow to 3.2% next year from 3.3% this year, weighed down by slowing in the U.S. and China and weakness in the eurozone. For 2012, OPEC left its forecast for growth in global oil use virtually unchanged at 900,000 bpd. J.C. Penney ( JCP) is another popular search. The retailer posted a widerr-than-expected second quarter loss on declining sales. Same-store sales fell 21.7% in the quarter, compared to analysts' estimates of a 17.4% decline. Revenue dropped 22.6% to $3.02 billion, also below expectations. J.C. Penney recently adopted a new pricing strategy that advertised everyday low prices instead of continuous sales and coupons. The strategy, which was unveiled in February, has resulted in two straight quarters of sales declines.