First deployed on Election Day in 2018, Project Certeza’s purpose was to identify and deal with false information disseminated, particularly through social networks but also through any other media, that could produce uncertainty or distrust in the citizenry about the electoral authority’s responsibilities as the election is happening.

Included a technological monitoring system developed by Mexico's National Electoral Institute (Instituto Nacional Electoral or INE), which screened millions of pieces of social media content and other sources for potentially problematic words and phrases associated with elections. That flagged content was then referred to human moderators for verification and determination on whether the content required action. INE hired a network of temporary field operators to gather real-world information and document first-hand evidence that could be used to refute false and inaccurate claims. Evidence and analysis from the remote monitoring team and field teams were then shared with INE’s social outreach division, where specifically-tailored refutations or voter information content was shared via social networks and with media outlets.