Ströer and Bremen Office for Protection of the Constitution Cooperate for IT Security Warnings on Advertising Displays (heise.de)

• First cooperation of its kind in Germany between Ströer and the Bremen Office for the Protection of the Constitution
• Digital billboards warn of current IT security threats like Signal phishing
• Warnings started in May 2026 at high-traffic locations in Bremen
• Long-term plans include campaigns on disinformation, hybrid threats, and extremism

"German media company Ströer and the Bremen State Office for the Protection of the Constitution have initiated a cooperation to display IT security warnings on digital advertising boards. The first campaign warns of a Signal phishing wave. The goal is to reach a broad public through high-traffic locations. This is the first such cooperation in Germany."