CTI · reviewed · 2026-10-07

Nikkei discloses breaches of employee Microsoft and Google email accounts

Full story & timeline

MITRE ATT&CK

• T1078 Valid Accounts Stealth
• T1566 Phishing Initial Access

Indicators

No curated indicators tied to this case.

Detections

No detection content yet — case analysis did not yield signal-specific telemetry. Check back after the next daily CTI pass.

References

• https://www.bleepingcomputer.com/news/security/nikkei-discloses-breaches-of-employees-microsoft-google-email-accounts/
• https://www.infosecurity-magazine.com/news/nikkei-employee-cloud-account/
• https://japancyberwatch.com/articles/nikkei-google-workspace-microsoft-365-account-breaches-2026#the-phishing-reached-nikkei-bp