In Brazil, the 2018 election was marked by the growing number of fake news and by the far-right candidate, Jair Bolsonaro, digital campaign. After elected, his strategy to prioritize communication through social media has remained, as well as the continuous spread of disinformation and fake news, including about COVID-19. Furthermore, in 2019, the creation of a vast database of Brazilian citizens by decree had raised concerns about the dangerous of such a concentration of data. Measures aimed to centralized and control data have worsened during the COVID-19 pandemic, despite the government’s attempt to minimize the seriousness of the disease. Therefore, this paper claims that, faced with the scenario of domestic and comparative constitutional erosion, the association among systematic disinformation spread, surveillance and the COVID-19 pandemic can cause serious damage to the Brazilian democracy.