HackingEducationEducationData ExfiltratedCustomer Data InvolvedIdentity (basic)Government IDMediumContained

Monmouth University

bd_c1c62b4ab698afae · schema v1 · pii pii-v2

Severity

Medium

Discovered

Mar 3, 2026

Filed

Aug 20, 2026

To disclose

24 weeks

Affected

586state residents only

Linked

17 records

Confidence

66%

Full breach record for Monmouth University →

Monmouth University notified the NH Attorney General of a supplemental data breach affecting 586 New Hampshire residents. An unauthorized third party accessed the network between Feb 5-13, 2026, and exfiltrated files containing names, dates of birth, and Social Security numbers. The university discovered the incident on March 3, 2026. This notice supplements a June 30, 2026 initial notice, adding 369 previously unidentified residents. Credit monitoring is offered.

J jump to incidentP pin to compareR raw source

Leak gap clock⏱ Leak >90d24 weeks discovery → filing

Incident timeline

undetected · 26 days

discovery → filing · 24 weeks / 170 days

Feb 5, 2026

Begins

Mar 3, 2026

Discovered

Aug 20, 2026

Filed

This filing is one of 17 records about the same incident.View merged incident

A leak claim by pear about this victim was first seen 147 days before this filing.View originating leak claim

Linked disclosures

Why this link?

Regulatory filings (10) · sorted by filing gap

Vermont State AGbd_50e8a470276273932026-08-20Verified
Texas State AGbd_ff90bafaa120991d2026-08-21 · +1dVerified
Texas State AGbd_a0056bdb614e9c6a2026-07-01 · +50dVerified
Indiana State AGbd_290d4b16e85c0f262026-06-30 · +51dCandidate

Show 6 more filings ↓up to 69d gap

Massachusetts State AGbd_2f2dd8dfe15aba322026-06-30 · +51dVerified
California State AGbd_346c38b67fb416632026-06-30 · +51dVerified
New Hampshire State AGbd_6ac077d7b8335a232026-10-23 · +64dVerified
Rhode Island State AGbd_9b079d13e17d34402026-10-23 · +64dVerified
Vermont State AGbd_f1e4eecb1b18a7822026-10-26 · +67dVerified
Texas State AGbd_a4ecdd81dea4e1732026-10-28 · +69dVerified

Showing first 10 of 16 linked disclosures.

Name: Monmouth University
norm: monmouth university

Name: Monmouth University
norm: monmouth university
Domain: monmouth.edu
Industry: Educationllm

Discovered: Mar 3, 2026
Breach occurred: Feb 5, 2026 – Feb 13, 2026
Undetected for: 26 daysoccurrence → discovery
Materiality determined: —
Notification sent: Aug 19, 2026
Affected individuals: 586state-resident count only
Data types: Identity (basic)Government ID
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid AccountsT1041 Exfiltration Over C2 Channel
Threat actor: External
Regulator citations: Notified the Attorney General of the State of New Hampshire

During the incident: Took steps to further secure its systems
Began an investigation with the assistance of a leading cybersecurity firm
Reported the incident to law enforcement
Engaged a forensic security firm, through counsel, to assist with Monmouth’s investigation of the incident
Notified involved individuals
Offering complimentary credit monitoring services
Providing information on how to protect against fraudulent activity and identity theft
Arranged for a dedicated call line to assist in responding to inquiries regarding the incident
Changes made: Enhancing its technical security measures
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 24 weeks(170 days from discovery to filing)
Compliance flags: Leak >90d
Discovery-date grounding: letter-groundedThe discovery date is the detection date narrated in the notification letter — the defensible tier.

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 11 filings · 7 states

View merged incident ↗

Indiana State AGJun 30 · first

Massachusetts State AGJun 30 · first

California State AGJun 30 · first

Texas State AG+1d

Vermont State AG+51d

New Hampshire State AG+51d · this page

Texas State AG+52d

New Hampshire State AG+115d

Rhode Island State AG+115d

Vermont State AG+118d

Texas State AG+120d

Pattern: first filing Jun 30 (IN), last Oct 28 (TX) — a 120-day rolling notification. Rolling spreads often mean counsel is filing as thresholds trip per state. Why this link?

Cascade drawn from the first 10 linked disclosures of 16 — the full spread may be wider.

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/monmouth-university-20260820.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Aug 20, 2026
Raw hash: 1ae12202aaf0b594ed8d6b2763c3864c3a1223e23786b6c5f1f2afe77f121760

Linked disclosures

Regulatory filings (10) · sorted by filing gap

Reporting entityMonmouth University

Victim entityMonmouth University

Incidentdiscovered Mar 3, 2026

Stated responseTook steps to further secure its systems

ComplianceLeak >90d

Extraction provenanceno artifact recorded

Source provenancemm.nh.gov