JR West (West Japan Railway)
Osaka, Japan2 sources
Confirmed:Confirmed by the organisation, a regulator or a securities filing. First reported 31 Oct 2026.
JR West says bond investor data leaked via NTT Data vendor
JR West disclosed on 31 October 2026 that investor information for two bond investors may have leaked through unauthorised access at an external service, identified in reporting as an NTT Data subcontractor.
- Type
- Supply chain
- Sector
- Transport
- Records
- 2 records confirmed
- First reported
- 31 Oct 2026
- Latest source
- 31 Oct 2026
What to do
- Update the affected app or extension to the version the vendor names as clean.
- If you installed a compromised version, change passwords you used on that machine.
- Search your lockfiles and build logs for the affected package versions.
- If a malicious version was installed, rotate every secret that machine or pipeline could read.
- Pin dependencies and review install scripts in CI.
Not sure? Ask an assistant with the sources attached, or have a coding agent check your systems.
Check your systems for JR West (West Japan Railway)
Sources
2- cybersecurity-jp.com31 Oct 2026cybersecurity-jp.com/news
- cybersecurity-jp.com31 Oct 2026cybersecurity-jp.com/news/118030
Confidence 70% that this is real and correctly placed. Locations are city centroids at best. Spotted an error? Report a correction.