All Breaches
CyrusOne Data Breach
In August 2026, the threat group ShinyHunters leaked internal Microsoft Entra ID (Azure AD) directory records and operational data attributed to data center operator CyrusOne.
8.8 Thousand
Reported Records
6
Data Types
Low
Severity
Oct 9, 2026
Last updated
Exposed Data Types
6- Email addresses
- Names
- Job titles
- Phone numbers
- Physical addresses
- Usernames
About This Breach
The compromised dataset includes employee and external partner email addresses, full names, job titles, department details, and contact numbers.
Verification and editorial method
LeakData compares the incident name, date, affected-record count, and exposed data types with accessible sources. Unverified fields are not presented as facts, and records are updated when new evidence becomes available.
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