Harvard alumni and fundraising breach exposes 850,537 accounts
Harvard University’s alumni and fundraising systems were breached through voice phishing in November 2025, resulting in the theft of personal information. The stolen data included names, contact details, dates of birth, donation histories, family relationships, and employment information, and hackers published it in February 2026. When the breach data was added to Have I Been Pwned in November 2026, the scope was established as accounts linked to 850,537 unique email addresses.
Key facts
- Affected organization
- Harvard University
- Incident type
- Data breach
- Occurred / detected
- Not confirmed
- Scale of damage
- Account information linked to 850,537 unique email addresses
- Cause / method
- Breach of alumni and fundraising systems through voice phishing
- Location
- United States
If your data was exposed
Exposed dataNamePhone numberEmailDate of birthUsage & purchase history
- Don’t tap links in texts, calls or emails that mention this incident and offer compensation, refunds or breach checks. Check directly on the organization’s official website or app.
Timeline
- The breach of alumni and fundraising operations and the possible exposure of donor records and personal information became known.
- Hackers published personal information stolen in the Harvard University breach.
- The addition to Have I Been Pwned confirmed that 850,537 accounts were affected.
16 related reports
- Harvard Hacked in Most Recent Case of Ivy League Cyberattacks
- Data Breach at Harvard’s Development Office May Have Exposed Donor Records, Personal Information
- Harvard reports data breach in alumni affairs division
- Hackers publish personal information stolen during Harvard, UPenn data breaches
- A Technical and Ethical Post-Mortem of the Feb 2026 Harvard University ShinyHunters Data Breach
- Harvard, UPenn Data Leaked in ShinyHunters Shakedown
- Have I Been Pwned Adds 850,537 Accounts From Harvard’s 2025 Breach
- Harvard Data Breach Exposed 851,000 Email Addresses and Personal Records
- Have I Been Pwned称，哈佛数据泄露事件暴露了850,500个账户的数据
- Harvard University data breach exposed info of 851,000 accounts
- Harvard data breach exposed 850,500 unique accounts
- Harvard Breach Exposed 851,000 Email Addresses, HIBP Finds
- Harvard University data breach impacts over 850,000 individuals
- 하버드대학교 해킹 피해 85만 건 확인…기부 내역·가족정보까지 유출
- Harvard University reveals data breach exposed 851,000 accounts
- News - Harvard University data breach impacted more than 850,000 accounts, says Troy Hunt
Other incidents at Harvard University
Harvard investigates security breach after threat to publish stolen data
A cybercrime group threatened to publish data stolen from Harvard University. Harvard is investigating the security breach, and the specific extent of the damage and the date of the incident have not been confirmed.
Read on The Harvard Crimson ↗
The summary and key facts are written by AI from related reports and may contain errors. Check the original articles and the organization’s official statements for accurate details.