Data breach
CyrusOnecyrusone.com
373 460 accounts exposed in a breach dated 2026-08-05.
Breached2026-08-05Added to HIBP2026-10-07 UTCUpdated by HIBP2026-10-07 UTCAccounts373 460Domaincyrusone.com
Verified
What happened in Have I Been Pwned’s words
In August 2026, data centre operator CyrusOne was the target of a ShinyHunters "pay or leak" extortion attempt. The group subsequently published data allegedly obtained from the company, which included 373k unique email addresses across records relating to users, sales leads and CyrusOne employees. The data largely consisted of corporate contact information, including names, physical addresses, phone numbers and job titles. It also included support tickets and other information related to the organisation's operations.
Exposed data as HIBP classifies it
- Email addresses
- Employers
- Job titles
- Names
- Phone numbers
- Physical addresses
- Support tickets
How HIBP qualifies it
- HIBP verified that the data came from this service.
Source: Have I Been Pwned (CC BY 4.0)
Copied from HIBP 2026-11-05 03:50 UTC