CY
CyrusOne
MediumCyrusOne data breach exposed corporate contact information and operational data in August 2026.
373,460 recordsBreach Aug 5, 2026Updated Oct 7, 2026
Exposed data classes
Fields reported as compromised in this breach record.
Email addressesEmployersJob titlesNamesPhone numbersPhysical addressesSupport tickets
Detailed Analysis
In-depth analysis of the breach and its implications.
In August 2026, the data center operator CyrusOne experienced a breach from the ShinyHunters group in an extortion attempt. The attackers obtained and published data, including corporate contact information (e.g., email addresses, names, job titles, and phone numbers) and organization-specific details such as support ticket information.
Impact Analysis
Understanding the scope and consequences of this breach.
- User Impact
- Individuals may experience phishing attempts or targeted scams.
- Business Impact
- Potential reputation damage and operational disruptions for CyrusOne.
- Affected Sectors
- Technology
- Data Center Services
- Geographic Impact
- Global
What You Should Do
Recommended actions to take in response to this breach.
If You Were Affected
- •Monitor email accounts for unauthorized access
- •Be vigilant against phishing attempts
- •Update passwords if they were shared in support tickets
Preventive Measures
- •Organizations should enhance disaster recovery response
- •Regularly audit access controls and provide employee cybersecurity training
Frequently Asked Questions
Common questions about this breach and what it means for you.
Information such as email addresses, names, phone numbers, job titles, physical addresses, and support ticket details were exposed.