HackingEducationEducationData ExfiltratedCustomer Data InvolvedGovernment IDIdentity (basic)HighContained

Delbarton School

bd_061f71f80b5ca776 · schema v1 · pii pii-v1

Severity

High

Discovered

Jul 16, 2020

Filed

Dec 11, 2020

To disclose

21 weeks

Affected · nationwide

26,08471 in this filing

Linked

2 filings

Confidence

66%

Full breach record for Delbarton School →2 incidents on file

Delbarton School, an educational institution in New Jersey, reported an external system breach (hacking) occurring between May 14 and May 20, 2020. The incident was discovered on July 16, 2020. The breach compromised the names and Social Security Numbers of 26,084 individuals, including 71 Maine residents. The school provided written notification to affected individuals on December 11, 2020, and offered 24 months of credit monitoring through CyberScout/Experian.

J jump to incidentP pin to compareR raw source

Maine clockDiscovered Jul 16, 2020 → Filed with AG Dec 11, 2020148d ✗ ME AG >90d21 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 · 63 days

discovery → filing · 21 weeks / 148 days

May 14, 2020

Begins

Jul 16, 2020

Discovered

Dec 11, 2020

Filed

vs. sector median

+13 wks slower

This filing is one of 2 about the same incident.View merged incident

Part of BLACKBAUD, INC. supply-chain incident (2020) — a supply-chain cascade affecting multiple organizations.View cascade →

Linked disclosures

Why this link?

Regulatory filings (1) · sorted by filing gap

New Hampshire State AGbd_03d2898a8bf355522020-12-16 · +5dVerified

Name: Delbarton School
norm: delbarton school
Industry: education

Name: Delbarton School
norm: delbarton school
Industry: education
Industry: Educationllm

Discovered: Jul 16, 2020
Breach occurred: May 14, 2020 – May 20, 2020
Undetected for: 63 daysoccurrence → discovery
Materiality determined: —
Notification sent: Dec 11, 2020
Affected individuals: 26,084state + nationwide
Data types: Government IDIdentity (basic)
Data elements: Social Security number
Attack vector: Unauthorized Access
MITRE ATT&CK: T1190 Exploit Public-Facing Application
Threat actor: External
Initial access: exploit_public_facing

During the incident: Sent written notification to affected individuals
Offered twenty-four (24) months of credit monitoring via CyberScout/Experian
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 21 weeks(148 days from discovery to filing)
Compliance flags: ME AG >90d · 148dME resident >60d · 148d
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.
Clock breakdown: Statute Window Elapsed Threshold Status
Maine
Discovered: Jul 16, 2020
→ Filed with AG: Dec 11, 2020
148d 90 days ME AG >90d
Maine
Discovered: Jul 16, 2020
→ Notified: Dec 11, 2020
148d 60 days (analyst band; statutory cap is 30 days) ME resident >60d

Statute	Window	Elapsed	Threshold	Status
Maine	Discovered: Jul 16, 2020 → Filed with AG: Dec 11, 2020	148d	90 days	ME AG >90d
Maine	Discovered: Jul 16, 2020 → Notified: Dec 11, 2020	148d	60 days (analyst band; statutory cap is 30 days)	ME resident >60d

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 2 filings · 2 states

View merged incident ↗

Maine State AGDec 11 · first · this page

New Hampshire State AG+5d

Pattern: first filing Dec 11 (ME), last Dec 16 (NH) — a 5-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://www.maine.gov/agviewer/content/ag/985235c7-cb95-4be2-8792-a1252b4f8318/ac7d6206-b34d-4c15-8b07-ab341e65ab56.shtml
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Dec 11, 2020
Raw hash: 8e8310c32de7c4cbea8be8eb6e8bbf8ae1dd074837d73c7c26a7071e03a3abc3

Linked disclosures

Regulatory filings (1) · sorted by filing gap

Reporting entityDelbarton School

Victim entityDelbarton School

Incidentdiscovered Jul 16, 2020

Stated responseSent written notification to affected individuals

ComplianceME AG >90d

Extraction provenanceno artifact recorded

Source provenancewww.maine.gov