The "Zipp It" campaign during World War II was part of a broader effort to prevent careless talk that could inadvertently aid the enemy. Governments, particularly in Britain and the United States, launched propaganda campaigns urging citizens and soldiers to keep sensitive information to themselves. Posters and slogans warned that spies could be listening, and even casual conversations could lead to disastrous consequences.
One of the most famous slogans from this era was "Careless Talk Costs Lives," which appeared on posters depicting people unknowingly leaking information to enemy agents. The campaign aimed to boost security awareness and prevent the spread of rumors that could harm morale.
