HackingEducationEducationCustomer Data InvolvedEmployee Data InvolvedIdentity (basic)Government IDMediumContained

Chambersburg Area School District

bd_5087cfbb8933479f · schema v1 · pii pii-v1

Severity

Medium

Discovered

Aug 27, 2023

Filed

Oct 26, 2023

To disclose

9 weeks

Affected

1state residents only

Linked

7 filings

Confidence

66%

Full breach record for Chambersburg Area School District →

Chambersburg Area School District notified the NH AG of a data event affecting 1 NH resident. Unauthorized access occurred Aug 21-26, 2023; discovered Aug 27, 2023. Affected data included names, SSNs, DOBs, and driver's licenses of bus drivers, employees, and students. Response included forensic investigation, law enforcement notification, and 1-year Equifax credit monitoring.

J jump to incidentP pin to compareR raw source

Leak gap clock⏱ Leak >30d9 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 · 6 days

discovery → filing · 9 weeks / 60 days

Aug 21, 2023

Begins

Aug 27, 2023

Discovered

Oct 26, 2023

Filed

vs. sector median

2 wks faster

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

A leak claim by blackbyte about this victim predates this filing by 49 days.View originating leak claim

Linked disclosures

Why this link?

Ransomware claims (1)

Leak Siteblackbytebd_0c4f976668651ce32023-09-07 · +49dVerified by operator

Regulatory filings (5) · sorted by filing gap

Massachusetts State AGbd_37706ed181d3c5dd2023-10-26Verified by operator
Maine State AGbd_3eba95429b4450582023-10-26Verified by operator
Vermont State AGbd_3ec3d490a6b1a1282023-10-26Verified
Indiana State AGbd_ac84984901808e032023-10-26Verified

Show 1 more filing ↓up to 60d gap

Pressblackbytebd_6da3dd924407961e2023-08-27 · +60dCandidate

Name: Mullen Coughlin LLC
norm: mullen coughlin

Name: Chambersburg Area School District
norm: chambersburg area school district
Industry: Educationllm

Discovered: Aug 27, 2023
Breach occurred: Aug 21, 2023 – Aug 26, 2023
Undetected for: 6 daysoccurrence → discovery
Materiality determined: —
Notification sent: Oct 26, 2023
Affected individuals: 1state-resident count only
Data types: Identity (basic)Government ID
Attack vector: Unauthorized Access
MITRE ATT&CK: T1190 Exploit Public-Facing Application
Threat actor: External
Regulator citations: Notified federal law enforcement regarding the event
Initial access: exploit_public_facing

During the incident: Took steps to secure its systems
Launched an investigation into the nature and scope of the event with the assistance of third-party forensic specialists
Reviewed the affected files
Notified federal law enforcement regarding the event
Working to implement additional safeguards and training to its employees
Providing access to credit monitoring services for one (1) year through Equifax
Changes made: Implemented additional security measures to further protect against similar incidents occurring in the future
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 9 weeks(60 days from discovery to filing)
Compliance flags: Leak >30d
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 · 6 filings · 5 states

View merged incident ↗

PressAug 27 · first

Massachusetts State AG+60d

Maine State AG+60d

Vermont State AG+60d

Indiana State AG+60d

New Hampshire State AG+60d · this page

Pattern: first filing Aug 27, last Oct 26 (NH) — a 60-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/chambersburg-area-school-district-20231026.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Oct 26, 2023
Raw hash: 2b4c0f8a71c40c55734d1e631d7d0c3e341555c0708476a7cc49a57d7d59c44d

Linked disclosures

Ransomware claims (1)

Regulatory filings (5) · sorted by filing gap

Reporting entityMullen Coughlin LLC

Victim entityChambersburg Area School District

Incidentdiscovered Aug 27, 2023

Stated responseTook steps to secure its systems

ComplianceLeak >30d

Extraction provenanceno artifact recorded

Source provenancemm.nh.gov