Pony Ma, chief executive officer of Tencent, makes a keynote speech during the Global Mobile Internet Conference in Beijing, May 10, 2012. Ma said Tencent sees explosive growth in the mobile Internet market in China, but he also warned against security threats, particularly Android-based smartphones. The two-day conference has attracted domestic and international mobile Internet leaders from a wide array of industries, ranging from services, software, games, end-user device producers, and telecom operators. [Photo by Uking Sun/chinadaily.com.cn]