Shifts between concepts of “graphic design” and “visual communication” offer numerous topical links and demonstrate their relevance for our research question: “How can communication designers design and steer rumor-based communication?” An interdisciplinary research team at the Bern University of the Arts (HKB) launched the project “Gerüchtekuchee” (“Rumour mill”) and conducted an experiment by planting a real-life rumor in organizational context. Results together with evidence from a literature review informed a practice application—“The Rumor Fighter”—as part of a museum exhibition, Gerücht: Museum für Kommunikation [Rumor: Museum of Communication], in Bern, Berlin, Frankfurt.