Colonial Pipeline was using vulnerable, outdated version of Microsoft Exchange May 12, 2021 by admin Tweet Colonial Pipeline may have been using an outdated version of Microsoft Exchange when it was targeted by a ransomware attack last week. Pipeline operators were warned about potential attacks in 2020 Read more… Neowin Related Posts:Microsoft Exchange Servers under attack from Hive's…Microsoft testing Canary pipeline with Windows 11…Microsoft releases Windows 11 Dev build 22567.100…Microsoft releases Windows 11 build 22572.100…Microsoft releases servicing pipeline build…