Forex broker OANDA Japan Inc today issued a warning to its clients regarding unauthorized access to Onamae.com Desktop Cloud.

On October 21, 2026, unauthorized access by a third party was confirmed to the “Onamae.com Desktop Cloud” service provided by GMO Internet Group, Inc., and it has been reported that information on the service’s servers may have been viewed.

This service is a VPS (Virtual Private Server) service for running MT4/MT5 and automated trading programs 24 hours a day. Customers using our MT4/MT5 on this service may have had their login information (ID and password) viewed by a third party.

OANDA Japan requests that its clients take the following actions immediately:

• Change their password for OANDA Japan’s My Page
• Change their MT5/MT4 password (You can change it from My Page)
• Use MT5/MT4 two-factor authentication
• Check their trading history
• Contact support if they discover suspicious transactions, etc.

OANDA Japan is currently discussing future operational policies regarding this matter.