HackingEducationEducationVulnerability ExploitCapture Stored DataData ExfiltratedCustomer Data InvolvedSupply Chain (3P Vendor)Identity (basic)Government IDHighContained

Robertson County School System

bd_867fd1236b45473f · schema v1 · pii pii-v1

Severity

High

Discovered

Feb 26, 2025

Filed

Aug 15, 2025

To disclose

24 weeks

Affected · nationwide

19,6021 in this filing

Linked

4 filings

Confidence

65%

Full breach record for Robertson County School System →

Robertson County School System (TN) reported a third-party breach via PowerSchool affecting student and teacher data (name, SSN). Access occurred Dec 19-28, 2024; discovered Feb 26, 2025. Notices sent Aug 15, 2025. 19,602 individuals affected. Experian credit monitoring offered.

J jump to incidentP pin to compareR raw source

Maine clockDiscovered Feb 26, 2025 → Filed with AG Aug 15, 2025170d ✗ ME AG >90d24 weeks discovery → filing

⚠ AG web formThe discovery date came from the AG web-form field, which is systematically later than the detection date stated in the letter. Treat the clock as indicative.

Incident timeline

undetected · 69 days

discovery → filing · 24 weeks / 170 days

Dec 19, 2024

Begins

Feb 26, 2025

Discovered

Aug 15, 2025

Filed

vs. sector median

+16 wks slower

This filing is one of 4 about the same incident.View merged incident

Part of PowerSchool supply-chain incident (2025) — a supply-chain cascade affecting multiple organizations.View cascade →

Linked disclosures

Why this link?

Regulatory filings (3) · sorted by filing gap

Nebraska State AGbd_05c47b77badbc2fb2025-08-15Verified
Massachusetts State AGbd_11cbf894e6cd4d8f2025-08-15Verified
Indiana State AGbd_97a57439fbb5ca842025-08-15Verified

Name: Robertson County School System
norm: robertson county school system
Industry: Education

Name: Robertson County School System
norm: robertson county school system
Industry: Education
Industry: Educationllm

Discovered: Feb 26, 2025
Breach occurred: Dec 19, 2024 – Dec 28, 2024
Undetected for: 69 daysoccurrence → discovery
Materiality determined: —
Notification sent: Aug 15, 2025
Affected individuals: 19,602state + nationwide
Data types: Identity (basic)Government ID
Attack vector: Unauthorized Access
MITRE ATT&CK: T1190 Exploit Public-Facing ApplicationT1041 Exfiltration Over C2 ChannelT1078 Valid Accounts
Threat actor: ExternalFinancial
Regulator citations: Provided written notice of this incident to relevant state regulators
Third party: via PowerSchool
Initial access: exploit_public_facing

During the incident: Initiated an investigation to determine what happened and what information was affected
Assessed the security of Robertson County systems
Identified potentially affected individuals
Provided access to credit monitoring services for twenty-four (24) months through Experian
Provided impacted 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: Implementing additional safeguards and training to its employees
Reviewing policies and procedures to further protect against similar events occurring in the future
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 24 weeks(170 days from discovery to filing)
Compliance flags: ME AG >90d · 170dME resident >60d · 170d
Discovery-date grounding: AG web formThe discovery date came from the AG web-form field, which is systematically later than the detection date stated in the letter. Treat the clock as indicative.
Clock breakdown: Statute Window Elapsed Threshold Status
Maine
Discovered: Feb 26, 2025
→ Filed with AG: Aug 15, 2025
170d 90 days ME AG >90d
Maine
Discovered: Feb 26, 2025
→ Notified: Aug 15, 2025
170d 60 days (analyst band; statutory cap is 30 days) ME resident >60d

Statute	Window	Elapsed	Threshold	Status
Maine	Discovered: Feb 26, 2025 → Filed with AG: Aug 15, 2025	170d	90 days	ME AG >90d
Maine	Discovered: Feb 26, 2025 → Notified: Aug 15, 2025	170d	60 days (analyst band; statutory cap is 30 days)	ME resident >60d

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 4 filings · 4 states

View merged incident ↗

Nebraska State AGAug 15 · first

Massachusetts State AGAug 15 · first

Indiana State AGAug 15 · first

Maine State AGAug 15 · first · this page

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://www.maine.gov/agviewer/content/ag/985235c7-cb95-4be2-8792-a1252b4f8318/540d355a-5b3a-410c-b78c-72779b9b17cf.html
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Aug 15, 2025
Raw hash: 52ed4ad3378c35487824ccfb8faee00726e7424e0222a38ee13598b9ddcbc101

Linked disclosures

Regulatory filings (3) · sorted by filing gap

Reporting entityRobertson County School System

Victim entityRobertson County School System

Incidentdiscovered Feb 26, 2025

Stated responseInitiated an investigation to determine what happened and what information was affected

ComplianceME AG >90d

Extraction provenanceno artifact recorded

Source provenancewww.maine.gov