Phishing Attacks Target German Politicians via Signal App

German federal prosecutors are investigating an ongoing phishing campaign using the Signal app that targeted politicians, military personnel and journalists; attackers impersonated Signal support via social engineering, compromised at least one Signal account (Bundestag President Julia Kloeckner) and attempted to breach others including Chancellor Friedrich Merz, with the domestic intelligence agency BfV warning the activity is likely state‑sponsored and the integrity of officials' communications now uncertain.