Cheetah Mobile Inc. operates as an internet company in the People's Republic of China, the United States, and internationally. The company's utility products include Clean Master, a junk file cleaning, memory boosting, and privacy protection tool for mobile devices; Security Master, an anti-virus and security application for mobile devices; and Duba Anti-virus, an internet security application to protect users against known and unknown security threats and malicious applications. In addition, it offers mobile games comprising Piano Tiles 2, Rolling Sky, and Dancing Line; and Cheetah GreetBot, a reception robot. Further, the company provides mobile advertising publisher services; duba.com personal start page that aggregates online resources and provides users access to their online destinations; cloud-based data analytics engines; and artificial intelligence and other services. It serves direct advertisers that include mobile application developers, mobile game developers, and e-commerce companies, as well as search engines and partnering mobile advertising networks. The company was formerly known as Kingsoft Internet Software Holdings Limited and changed its name to Cheetah Mobile Inc. in March 2014. Cheetah Mobile Inc. was incorporated in 2009 and is headquartered in Beijing, the People's Republic of China.