Marija Ćosić is a deputy editor-in-chief and a project coordinator at the factchecking platform Raskrinkavanje, one of the factchecking platforms run by CA Why Not from Bosnia and Herzegovina. Ćosić joined CA Why Not in 2020. Besides her work at Raskrinkavanje, she is engaged in various projects within CA Why Not, mainly those related to the topics of media literacy and factchecking. She holds a masters degree in Journalism and Communication from Faculty of Political Sciences, University of Sarajevo. The topic of her master’s thesis was “Human rights of marginalised groups in online media content”. Ćosić has co-authored multiple research projects and publications on various topics related to the information environment.