A data breach at Japan’s Mitsubishi Electric that may have exposed some 200 MB of personal and confidential business data is the latest reminder of the growing threat many organizations face from sophisticated cyber espionage groups. Asahi Shimbun and Nikkei both cited unnamed company officials as saying scores of servers and PCs across Japan had been compromised in the attack. Both newspapers identified the group behind the attack as “Tick’, a China-based outfit that some security vendors have referred to as “Bronze Butler/REDBALDKNIGHT””]