HackingEducationEducationVulnerability ExploitCL0pZero-DayData ExfiltratedData PublishedRansom DemandedTargetedDelayed DiscoveryIdentity (basic)Government IDMediumActive

Harvard University

bd_0dfa068a1f7e8d87 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Sep 29, 2025

Filed

Feb 6, 2026

To disclose

19 weeks

Affected

4state residents only

Confidence

66%

Full breach record for Harvard University →17 incidents on file

Harvard University notified the New Hampshire Attorney General on February 6, 2026, regarding a data incident involving the CL0p threat actor. The actor exploited a zero-day vulnerability in an Oracle E-Business Suite application between August 9 and August 20, 2025, to exfiltrate and publish data. The breach affected 4 New Hampshire residents, exposing names, addresses, and Social Security numbers. Harvard engaged forensic experts, applied Oracle's patch, and is providing two years of credit monitoring to affected individuals.

J jump to incidentP pin to compareR raw source

Leak gap clock⏱ Leak >90d19 weeks discovery → filing

⚠ unattributedNo provenance was recorded for this discovery date and it matches no other date on the record. It may be correct, but it is not independently grounded.

Incident timeline

undetected · 51 days

discovery → filing · 19 weeks / 130 days

Aug 9, 2025

Begins

Sep 29, 2025

Discovered

Feb 6, 2026

Filed

vs. sector median

+10 wks slower

Tracked as a single-filing incident — the only disclosure on record for this event so far.Confirmed4 affectedView incident

A leak claim by cl0p about this victim predates this filing by 101 days.View originating leak claim

Name: Harvard University
norm: harvard university
Domain: harvard.edu

Name: Harvard University
norm: harvard university
Domain: harvard.edu
Industry: Educationllm

Discovered: Sep 29, 2025
Breach occurred: Aug 9, 2025 – Aug 20, 2025
Undetected for: 51 daysoccurrence → discovery
Materiality determined: —
Notification sent: Feb 6, 2026
Affected individuals: 4state-resident count only
Data types: Identity (basic)Government ID
Data elements: Social Security number
Attack vector: Unauthorized Access· CL0p
MITRE ATT&CK: T1190 Exploit Public-Facing ApplicationT1041 Exfiltration Over C2 ChannelT1486 Data Encrypted for Impact
Threat actor: CL0pExternalFinancial
Regulator citations: sending notices to New Hampshire residents advising them of a data incidentnotifying the New Hampshire Office of the Attorney General
Initial access: exploit_public_facing

During the incident: Initiated an investigation of the incident with the assistance of external third-party forensic experts
Performed a vulnerability scan of potentially impacted systems
Reviewed available logs for suspicious activity
Rotating credentials
Moved its EBS systems behind a virtual private network
Applied the patch to address the zero-day vulnerability
Vigilantly monitoring updates from Oracle
Working with its external forensics experts to take appropriate steps to further protect the systems
Hired a third-party firm (the Data Review Firm) that specializes in data review for data incidents to conduct a thorough review of the data set
Changes made: Moved its EBS systems behind a virtual private network to add an extra layer of protection
Applied the patch to address the zero-day vulnerability
Vigilantly monitoring updates from Oracle
Working with its external forensics experts to take appropriate steps to further protect the systems
Providing two-year complimentary credit monitoring services to the affected New Hampshire residents
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 19 weeks(130 days from discovery to filing)
Compliance flags: Leak >90d
Discovery-date grounding: unattributedNo provenance was recorded for this discovery date and it matches no other date on the record. It may be correct, but it is not independently grounded.

Status: No extraction artifact recorded for this disclosure.

Evidence ladder

Leak-site claim

Attacker assertion only. Establishes: claim date, group, alleged victim.

Press / market report

Unlocks: incident narrative, operational impact. Still no compliance clock.

State AG / regulator filingThis record

Unlocks: discovery date, data types, affected count, compliance clock.

SEC 8-K / victim statement

Unlocks: materiality, stated response, full audit trail. Ceiling removed.

Source URL: https://mm.nh.gov/files/uploads/doj/remote-docs/harvard-university-20260206.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Feb 6, 2026
Raw hash: d03519306a166f3c5a700b3eada9e1accd2aa3f1a32889c5177953700c10eef8

Reporting entityHarvard University

Victim entityHarvard University

Incidentdiscovered Sep 29, 2025

Stated responseInitiated an investigation of the incident with the assistance of external third-party forensic experts

ComplianceLeak >90d

Extraction provenanceno artifact recorded

Source provenancemm.nh.gov