Harvard University data breach exposed info of 851,000 accounts

BleepingComputer

November 3, 2026 at 10:53 AM

Overview

In November 2025, hackers gained unauthorized access to Harvard University's Alumni Affairs and Development systems, compromising the data of over 851,000 accounts. This breach included sensitive information tied to unique email addresses, as reported by the breach notification service Have I Been Pwned. The incident raises significant concerns about the security of alumni data at educational institutions, which can be a target for identity theft and phishing attacks. Affected individuals may need to monitor their accounts for suspicious activity and consider changing passwords to safeguard their information. This breach serves as a reminder for organizations to strengthen their cybersecurity measures to protect sensitive user data.

Key Takeaways

Affected Systems: Harvard University Alumni Affairs and Development systems
Action Required: Users should change passwords and monitor accounts for unusual activity.
Timeline: Disclosed on November 2025

Original Article Summary

Hackers who breached Harvard University's Alumni Affairs and Development systems in November 2025 stole data linked to more than 850,000 unique email addresses, according to breach notification service Have I Been Pwned. [...]

Impact

Harvard University Alumni Affairs and Development systems

Exploitation Status

The exploitation status is currently unknown. Monitor vendor advisories and security bulletins for updates.

Timeline

Disclosed on November 2025

Remediation

Users should change passwords and monitor accounts for unusual activity.

Additional Information

This threat intelligence is aggregated from trusted cybersecurity sources. For the most up-to-date information, technical details, and official vendor guidance, please refer to the original article linked below.

Related Topics: This incident relates to Phishing, Data Breach.

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