MalwareEducationEducationRansomwareStolen CredentialsData ExfiltratedRansom DemandedTargetedPIIIdentity (basic)CredentialsLowContained

Prince George's County Public Schools

bd_e614eab3878f05a2 · schema v1 · pii pii-v1

Severity

Low

Discovered

Aug 14, 2023

Filed

Feb 26, 2024

To disclose

28 weeks

Affected

4state residents only

Linked

7 records

Confidence

66%

Full breach record for Prince George's County Public Schools →

Prince George’s County Public School District notified NH AG of a ransomware incident discovered Aug 14, 2023. Unauthorized access occurred Aug 3-14, 2023, affecting 4 NH residents with PII and credentials. PGCPS engaged forensic specialists, reset passwords, notified law enforcement, and offered credit monitoring.

J jump to incidentP pin to compareR raw source

Leak gap clock✗ Leak >180d28 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 · 11 days

discovery → filing · 28 weeks / 196 days

Aug 3, 2023

Begins

Aug 14, 2023

Discovered

Feb 26, 2024

Filed

This filing is one of 7 records about the same incident.View merged incident

A leak claim by rhysida about this victim was first seen 185 days before this filing.View originating leak claim

Linked disclosures

Why this link?

Ransomware claims (1)

Leak Siterhysidabd_8ae5e09ce762a9922023-08-14 · +196dVerified by operator

Regulatory filings (4) · sorted by filing gap

Vermont State AGbd_aad486a5dc9671092024-02-16 · +10dVerified by operator
Maine State AGbd_b45517379abebaaa2024-02-16 · +10dVerified by operator
Massachusetts State AGbd_e096a863b1d43bee2024-02-16 · +10dVerified by operator
Indiana State AGbd_08eab472eefc37222024-02-14 · +12dVerified by operator

Press reports (1)

Pressrhysidabd_d6c0f52f7e7c7bba2023-08-14 · +196dCandidate

Name: Mullen Coughlin LLC
norm: mullen coughlin

Name: Prince George's County Public Schools
norm: prince george s county public schools
Domain: pgcps.org
Industry: Educationllm

Discovered: Aug 14, 2023
Breach occurred: Aug 3, 2023 – Aug 14, 2023
Undetected for: 11 daysoccurrence → discovery
Materiality determined: —
Notification sent: Feb 16, 2024
Affected individuals: 4state-resident count only
Data types: PIIIdentity (basic)Credentials
Attack vector: Ransomware
MITRE ATT&CK: T1486 Data Encrypted for ImpactT1078 Valid AccountsT1119 Automated Collection
Threat actor: ExternalFinancial
Regulator citations: Providing written notice of this incident to relevant state regulators
Initial access: valid_credentials

During the incident: Launched an investigation with outside forensic specialists
Reset passwords for all user accounts
Notified federal law enforcement
Providing access to credit monitoring services for , through Experian
Changes made: Implemented additional processes and procedures to help prevent similar incidents from occurring in the future
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 28 weeks(196 days from discovery to filing)
Compliance flags: Leak >180d
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.

Filing propagation · 5 filings · 5 states

View merged incident ↗

Indiana State AGFeb 14 · first

Vermont State AG+2d

Maine State AG+2d

Massachusetts State AG+2d

New Hampshire State AG+12d · this page

Pattern: first filing Feb 14 (IN), last Feb 26 (NH) — a 12-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://mm.nh.gov/files/uploads/doj/remote-docs/prince-georges-county-public-school-district-20240226.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Feb 26, 2024
Raw hash: bc6c80c7fe7e65cf98a95bddedf125dd53f969fbe7a0467fcbc7bd194b37c41a

Linked disclosures

Ransomware claims (1)

Regulatory filings (4) · sorted by filing gap

Press reports (1)

Reporting entityMullen Coughlin LLC

Victim entityPrince George's County Public Schools

Incidentdiscovered Aug 14, 2023

Stated responseLaunched an investigation with outside forensic specialists

ComplianceLeak >180d

Extraction provenanceno artifact recorded

Source provenancemm.nh.gov