HackingEducationEducationSupply Chain (3P Vendor)Customer Data InvolvedPIIFinancial accountMediumResolved

Holderness School

bd_33ad046cd66f8d75 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Jan 11, 2021

Filed

Mar 1, 2021

To disclose

7 weeks

Affected · nationwide

2,533104 in this filing

Linked

4 filings

Confidence

50%

Full breach record for Holderness School →

Holderness School reported a data breach affecting 104 Maine residents due to a security incident at its vendor, Blackbaud, Inc. The breach occurred on February 7, 2020, and was discovered on January 11, 2021. The compromised information included names and financial account numbers. The school offered 24 months of credit monitoring and identity theft protection services through CyberScout.

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Maine clockDiscovered Jan 11, 2021 → Filed with AG Mar 1, 202149d ⏱ ME AG >30d7 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 · 339 days

discovery → filing · 7 weeks / 49 days

Feb 7, 2020

Begins

Jan 11, 2021

Discovered

Mar 1, 2021

Filed

vs. sector median

2 wks faster

This filing is one of 4 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 (3) · sorted by filing gap

Montana State AGbd_322a06c8f7bff71f2021-03-01Verified
Massachusetts State AGbd_fce35c5de2aad0d42021-03-01Verified
New Hampshire State AGbd_a954f6b831109e3d2021-03-02 · +1dVerified

Name: Holderness School
norm: holderness school

Name: Holderness School
norm: holderness school
Industry: Educationllm

Discovered: Jan 11, 2021
Breach occurred: Feb 7, 2020
Undetected for: 339 daysoccurrence → discovery
Materiality determined: —
Notification sent: Mar 1, 2021
Affected individuals: 2,533state + nationwide
Data types: PIIFinancial account
Data elements: Financial account number
Attack vector: Third-Party / Supply Chain

Changes made: Offered 24 months of credit monitoring and identity theft protection services through CyberScout.
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 7 weeks(49 days from discovery to filing)
Compliance flags: ME AG >30d · 49d
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: Jan 11, 2021
→ Filed with AG: Mar 1, 2021
49d 30 days (soft) ME AG >30d

Statute	Window	Elapsed	Threshold	Status
Maine	Discovered: Jan 11, 2021 → Filed with AG: Mar 1, 2021	49d	30 days (soft)	ME AG >30d

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 4 filings · 4 states

View merged incident ↗

Montana State AGMar 1 · first

Massachusetts State AGMar 1 · first

Maine State AGMar 1 · first · this page

New Hampshire State AG+1d

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-a1252b4f8318/370e8a74-fd06-46ce-9ded-7e053094d5be.shtml
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Mar 1, 2021
Raw hash: ebd5d9a77df769221399c7d56e92f888efeec45326e2b467ef168709978461cf

Linked disclosures

Regulatory filings (3) · sorted by filing gap

Reporting entityHolderness School

Victim entityHolderness School

Incidentdiscovered Jan 11, 2021

Stated responseOffered 24 months of credit monitoring and identity theft protection services through CyberScout.

ComplianceME AG >30d

Extraction provenanceno artifact recorded

Source provenancewww.maine.gov