New breach: CyrusOne faced a ShinyHunters extortion attempt in August. Alleged breach data was later published: 373k unique email addresses, names and largely corporate contact info for users and leads. 84% were already in @haveibeenpwned. Read more: https://haveibeenpwned.com/Breach/CyrusOne
Have I Been PwnedHave I Been Pwned: CyrusOne Data BreachIn 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, ph