The past two decades have seen a simultaneous increase in internet use and the frequency of anti-government protests around the globe. Today, protests are organized via social media and messaging apps—digital communication spaces that enable easy coordination and information sharing. This ability of digital communication spaces to aid protest organization poses a threat to autocracies, as popular uprisings are one of the main causes of regime change. This dissertation adds to the discussion on the role of digital communication in contentious politics, such as protests, strikes, and demonstrations, in authoritarian regimes. I argue that autocrats seek information control in digital communication spaces to minimize the probability of contentious political actions. By controlling the digital information space, autocrats can reduce information critical of the regime, disseminate disinformation and pro-government propaganda, and halt communication between protesters. The results show that as the use of social media as a source of news is positively associated with participation in contentious politics globally, progovernment actors in autocracies seek to establish control over digital communication spaces. However, the outcomes vary. By focusing on two cases of political contention in authoritarian regimes—the 2020-2021 protests in Belarus and the 2022 anti-war protests in Russia—and the messaging app Telegram, I find that Russian pro-government actors are more sophisticated in controlling and manipulating digital communication spaces than Belarusian pro-government actors. These differences highlight the dual nature of the internet and digital technologies that simultaneously enable collective action and provide opportunities for digital repression.