CyrusOne data breach
In August 2026, CyrusOne suffered a data breach that exposed email addresses, employers, job titles, names, phone numbers, physical addresses, and support tickets. The breach affected 373,460 accounts. If you had an account there, change your password there, never reuse it anywhere else, and check your email address with the free scan.
- Breach date
- August 5, 2026
- Added to this tracker
- October 7, 2026
- Accounts affected
- 373,460
- Company domain
- cyrusone.com
- Data exposed
- Email addresses, employers, job titles, names, phone numbers, physical addresses, and support tickets
Was my information in the CyrusOne breach?
We cannot tell you that from this page. If you had an account with CyrusOne before August 2026, your information may have been included. The free Ghost Delete scan checks your email address against known data breaches, so run it to see whether your address shows up.
Run the free breach scan to check your email address now.
What data was exposed?
In the CyrusOne breach, the exposed data was email addresses, employers, job titles, names, phone numbers, physical addresses, and support tickets.
What should I do now?
- Change your password at CyrusOne right away, and anywhere else you reused it.
- Never reuse passwords: give every account a unique password.
- Watch for phishing emails and messages that use the exposed data to look convincing, and go to the site directly instead of clicking links.
- Run the free breach scan to check your email address against other breaches.
Removing yourself from data brokers is a bigger job than one breach. The DIY removal guide walks through doing it yourself, and Ghost Delete does it for you.