Share this article ROLLING MEADOWS, Ill. , June 30, 2021 /PRNewswire/ -- Arthur J. Gallagher & Co. ("Gallagher") is providing notice of a recent event that may affect the security of certain information. On September 26, 2020, Gallagher detected a ransomware event impacting our internal systems. Gallagher promptly took its systems offline as a precautionary measure, initiated response protocols, notified law enforcement, launched an investigation with the assistance of third-party cybersecurity and forensic specialists, and implemented its business continuity plans to minimize disruption t...