Japan Exchange Group

Japan Exchange Group was compromised in a ransomware attack attributed to root in November 2025. The organization, operating in an undisclosed sector in Unknown, was added to the group's data leak site as part of an extortion campaign.

root operates as a financially motivated ransomware-as-a-service (RaaS) operation, exfiltrating sensitive data and threatening public disclosure to pressure victims into paying ransom demands.

Japan Exchange Group, Inc. a holding company which engages in the operation of financial instruments exchange. It provides market infrastructure for financial instruments including financial instrument exchanges. It also offers investors a venue to manage their financial assets and listed companies a platform to raise the funds. The company was founded on April 1, 1949 and is headquartered in Tokyo, Japan.