By Mikel Pearce ( September 10, 2021, 1:36 PM EDT) -- In the U.S. District Court for the Northern District of Illinois, two nominal plaintiffs have commenced a class action against insurer/broker Arthur J. Gallagher & Co. (Gallagher), arising from a security breach and ransomware attack suffered by Gallagher between June 30, 2020, and Sept. 26, 2020....