The U.S. government masterminded the creation of a Cuban Twitter—a communications network designed to undermine the communist government in Cuba, built with secret shell companies and financed through foreign banks, The Associated Press has learned.

The project, which lasted more than two years and drew tens of thousands of subscribers, sought to evade Cuba’s stranglehold on the Internet with a primitive social media platform. First, the network would build a Cuban audience, mostly young people; then, the plan was to push them toward dissent.