Vintage safety poster for telephone caution

This vintage awareness poster warns against the risks of revealing important information during telephone conversations. Illustrated in a black-and-white graphic style, it depicts a smiling man speaking on the phone, while an attentive and suspicious silhouette eavesdrops behind the half-open door. The main message of this wall decoration is written in red, with the phrases "Be careful what you say over the phone – you may give away valuable information" and "Be on your guard!" to emphasize the importance of remaining vigilant against espionage and confidential information leaks. This poster can serve as an original wall decor piece, perfect for an office, a workspace, or any room where security and discretion are valued. Its simple and effective graphic design, combined with a clear message, makes it both decorative and educational. This print adds a retro touch and vintage style to your interior decoration, while reminding you of the importance of caution in telephone communications. This caricatured yet serious wall picture is suitable for both professional environments and personal interiors with a taste for vintage prevention posters.