GoKawiilHarvard breach exposed 850,500 accounts, Have I Been Pwned confirms
Have I Been Pwned has verified that a November 2025 breach of Harvard's Alumni Affairs and Development systems exposed data tied to more than 850,500 unique email addresses. The leaked records include names, emails, phone numbers, addresses, dates of birth and social media profiles, though Harvard says no Social Security numbers, passwords or payment data were stored on the affected systems. The ShinyHunters extortion gang claimed responsibility and published a 1.1GB archive online after Harvard declined to pay a ransom.