 
 <prompt> Wetin be di major criticism of di program? Based on di previous question, write a context wey contain di answer. E fit be 1 - 20 sentences. Context: <response>: In June 2014, state broadcaster China Central Television (CCTV) broadcast a news story further characterizing Windows 8 as a threat to national security. The story featured an interview with Ni Guangnan, wey talk say operating systems fit gather "sensitive user information" wey fit use to "understand the conditions and activities of our national economy and society", and allege say based on documents wey Edward Snowden leak, the U.S. government don work with Microsoft to collect encrypted information. Yang Min, wey be computer scientist for Fudan University, also talk say "the security features of Windows 8 dey basically to the benefit of Microsoft, wey allow dem control users' data, and e dey pose a big challenge to the national strategy for information security." Microsoft deny the claims for some posts for the Chinese social network Sina Weibo, wey talk say the company never "assist any government in an attack of another government or clients" or provide client data to the U.S. government, never "provide any government the authority to directly visit" or place any backdoors in its products and services, and say dem never hide government requests for client data. 