The True HOOHA used to be a technical consultant of the CIA and an outsourcing technician of the US National Security Agency. He has a large number of surveillance documents conducted by the National Security Agency, proving that the United States monitors foreign politicians and economic departments, a large number of US citizens and foreigners, and the most important thing is The government cooperates with major telecommunications companies and Internet companies to collect massive amounts of information indiscriminately. The former caused routine anger and protest, while the latter was not only frightening, but also caused a new round of trust in the privacy of users of large companies. The film records the course of this event.
The title Citizenfour () is the code name used by Snowden when contacting Laura Portas and Glenn Greenward. In January 2013, Snowden used the identity of Citizenfour to send the first email to documentary film director Laura Portas. The reason for choosing Portas was that she had also been monitored. Greenward is one of the most staunch supporters of WikiLeaks and Assange. He has written a lot of relevant comments in the media. His dual identities as a reporter and a lawyer are the best candidates to report on this incident
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