Chinese-backed threat group might be behind the attack
https://www.bleepingcomputer.com/news/security/mitsubishi-electric-warns-of-data-leak-after-security-breach/
Mitsubishi Electric, a leading global company in the manufacture and sales of electrical and electronic products, disclosed a security breach that might have caused the leak of personal and confidential corporate information.
The breach was detected almost eight months ago, on June 28, 2019, with the delay being attributed to the increased complexity of the investigation caused by the attackers deleting activity logs.