Boris Casoy and Lillian Witte Fibe lead Portuguese speakers in a free 10-day WhatsApp course designed by MediaWise.

The daily 5-minute lessons include simple, yet practical, techniques designed to improve digital engagement and awareness. By the end of the course, learners will be able to identify and explain different types of misinformation, and practice techniques professional fact-checkers use for verification.

MediaWise partnered with Projeto Comprova to customize and localize the educational content. Projeto Comprova is a collaborative, nonprofit initiative led by the Brazilian Association of Investigative Journalism (Abraji). Projeto Comprova brings together journalists from 40 Brazilian media outlets.

Casoy and Witte Fibe, iconic Brazilian journalists, join this educational effort as MediaWise Ambassadors. They walk learners through the daily WhatsApp message, question and video. Participants must respond to the question to guarantee a lesson the next day.


  • Boris Casoy
    Brazilian Journalist
    Throughout his 65-year career as a Brazilian journalist, Boris Casoy has been a trusted voice in radio, television broadcast, print and digital media including Jornal...
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  • Lillian Witte Fibe
    Brazilian Journalist
    Lillian Witte Fibe is a Brazilian journalist who has worked in newspapers, magazines, television, radio and digital media throughout her career. She covered economics and...
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  • Vanya Tsvetkova
    Interactive Learning Designer, MediaWise
    Vanya Tsvetkova develops curricula in various formats to teach fact-checking and media literacy skills to audiences of all ages in the U.S. and abroad. Vanya...
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  • Miriam Valverde
    Deputy Editor, PolitiFact
    Miriam Valverde is a fact-checker for PolitiFact. Previously, she reported for the South Florida Sun-Sentinel, the Bradenton Herald, the Boston Globe and a Boston Spanish-language...
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  • Brittani Kollar
    Deputy Director, MediaWise
    Brittani Kollar is the deputy director of MediaWise. Brittani manages international initiatives for Poynter’s MediaWise. Partnering with stakeholders in Brazil, France, Spain and Turkey, she...
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  • Alex Mahadevan
    Director, MediaWise
    Alex Mahadevan is the Director of the MediaWise project. Alex was most recently the Program Manager of MediaWise. Prior to joining the staff at Poynter,...
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