MalwareEducationEducationRansomwareData EncryptedData ExfiltratedCustomer Data InvolvedDelayed DiscoveryIdentity (basic)Government IDPHIHealth (basic)MediumContained

THE PEDDIE SCHOOL

bd_1dd6b58e62fdd675 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Dec 22, 2023

Filed

Apr 23, 2026

To disclose

—

Affected

43state residents only

Linked

11 records

Confidence

65%

Full breach record for THE PEDDIE SCHOOL →2 incidents on file

The Peddie School, an educational institution in New Jersey, reported a supplemental data event to the Maryland Attorney General on March 25, 2025. The incident involved unauthorized access to Peddie's network between October 30 and December 22, 2023, resulting in system encryption and file copying. The breach potentially affected 43 Maryland residents, exposing personal information including names, Social Security numbers, taxpayer IDs, driver's license numbers, passport numbers, and health/medical information. Peddie engaged forensic specialists, notified law enforcement, and provided one year of credit monitoring via Experian to affected individuals.

J jump to incidentP pin to compareR raw source

Incident timeline

undetected · 53 days

Oct 30, 2023

Begins

Dec 22, 2023

Discovered

Apr 23, 2026

Filed

This filing is one of 11 records about the same incident.View merged incident

Linked disclosures

Why this link?

Ransomware claims (1)

Leak Sitecl0pbd_476bc789fe64eb5c2024-02-26 · +786dVerified by operator

Regulatory filings (9) · sorted by filing gap

New Hampshire State AGbd_01348cdc5130e7152025-03-25 · +394dVerified by operator
Vermont State AGbd_2bbea5f218dcba152025-03-25 · +394dVerified by operator
Nebraska State AGbd_617cc5ebbb2569602025-03-25 · +394dVerified by operator
Maine State AGbd_e586fa423412f6392025-03-25 · +394dVerified

Show 5 more filings ↓up to 700d gap

Maine State AGbd_77e79094ddea2d022024-07-05 · +657dVerified
Montana State AGbd_04da857c7689a7942024-05-23 · +700dVerified by operator
New Hampshire State AGbd_192ce03072cfe7ee2024-05-23 · +700dVerified by operator
Indiana State AGbd_8affa2eb7369cfbd2024-05-23 · +700dVerified by operator
Vermont State AGbd_cd727856660b6df82024-05-23 · +700dVerified by operator

Name: Mullen Coughlin LLC
norm: mullen coughlin

Name: THE PEDDIE SCHOOL
norm: the peddie school
Domain: peddie.org
Industry: education
Industry: Educationllm

Discovered: Dec 22, 2023
Breach occurred: Oct 30, 2023 – Dec 22, 2023
Undetected for: 53 daysoccurrence → discovery
Materiality determined: —
Notification sent: Mar 25, 2025
Affected individuals: 43state-resident count only
Data types: Identity (basic)Government IDFinancial account
Data elements: Social Security number
Attack vector: Ransomware
MITRE ATT&CK: T1486 Data Encrypted for ImpactT1041 Exfiltration Over C2 Channel
Threat actor: ExternalFinancial
Regulator citations: Notified Maryland Attorney General's OfficeProvided written notice to relevant state regulators

During the incident: Commenced an investigation with the assistance of third-party forensic specialists
Worked to securely restore impacted system operations
Notified federal law enforcement regarding the event
Provided access to credit monitoring services for one (1) year through Experian
Provided individuals with guidance on how to better protect against identity theft and fraud
Provided written notice of this incident to relevant state regulators
Provided written notice to the three major credit reporting agencies
Changes made: Implemented additional technical safeguards
Revising its policies and procedures related to the handling of data
Source: Quoted from the filing itself, not independently verified.

Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 10 filings · 7 states

View merged incident ↗

Montana State AGMay 23 · first

New Hampshire State AGMay 23 · first

Indiana State AGMay 23 · first

Vermont State AGMay 23 · first

Maine State AG+43d

New Hampshire State AG+306d

Vermont State AG+306d

Nebraska State AG+306d

Maine State AG+306d

Maryland State AG+700d · this page

Pattern: first filing May 23 (MT), last Apr 23 (MD) — a 700-day rolling notification. Rolling spreads often mean counsel is filing as thresholds trip per state. Why this link?

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://oag.maryland.gov/resources-info/SBN%20Documents/2025/ITU-374876.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Apr 23, 2026
Raw hash: 5f3e4f03ad8937c201bf26db7c29bb33ebd74b30e7bdfd58e9b4f3c3cb8733ac

Linked disclosures

Ransomware claims (1)

Regulatory filings (9) · sorted by filing gap

Reporting entityMullen Coughlin LLC

Victim entityTHE PEDDIE SCHOOL

Incidentdiscovered Dec 22, 2023

Stated responseCommenced an investigation with the assistance of third-party forensic specialists

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenanceoag.maryland.gov