MalwareEducationEducationRansomwareData ExfiltratedSupply Chain (3P Vendor)Customer Data InvolvedPIIIdentity (basic)LowContained

Landon School Corporation

bd_0bf4676eed576e85 · schema v1 · pii pii-v1

Severity

Low

Discovered

Jul 1, 2020

Filed

Jan 22, 2021

To disclose

29 weeks

Affected

2state residents only

Linked

4 filings

Confidence

66%

Full breach record for Landon School Corporation →

Landon School notified the NH Attorney General of a ransomware attack on its third-party provider, Blackbaud, occurring in May 2020. The attack resulted in the exfiltration of unencrypted personal information regarding donors and contacts from a legacy platform. Landon mailed notification letters to 2 New Hampshire residents on January 22, 2021, offering credit monitoring services.

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Incident timeline

undetected · 61 days

discovery → filing · 29 weeks / 205 days

May 1, 2020

Begins

Jul 1, 2020

Discovered

Jan 22, 2021

Filed

vs. sector median

+21 wks slower

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

Maine State AGbd_30f303abd3e90d622021-01-22Candidate
Massachusetts State AGbd_802a01c566d85b5d2021-01-22Verified
Indiana State AGbd_8dd345882668eb012021-01-22Verified

Name: Landon School Corporation
norm: landon school

Name: Landon School Corporation
norm: landon school
Industry: Educationllm

Discovered: Jul 1, 2020
Breach occurred: May 1, 2020
Undetected for: 61 daysoccurrence → discovery
Materiality determined: —
Notification sent: Jan 22, 2021
Affected individuals: 2state-resident count only
Data types: PIIIdentity (basic)
Attack vector: Ransomware
MITRE ATT&CK: T1486 Data Encrypted for ImpactT1041 Exfiltration Over C2 Channel
Threat actor: ExternalFinancial
Regulator citations: Notified New Hampshire Attorney General
Third party: via Blackbaud
Initial access: supply_chain

During the incident: Engaged independent forensics experts
Cooperated with law enforcement
Expelled cybercriminals from Blackbaud's system
Reviewed data stored in the legacy Blackbaud software
Mailed notification letters to affected individuals
Offered credit monitoring and identity protection services through IDX
Changes made: Blackbaud identified and closed the vulnerability associated with the incident
Blackbaud accelerated efforts to enhance systems and harden its environment
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 29 weeks(205 days from discovery to filing)
Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 4 filings · 4 states

View merged incident ↗

Maine State AGJan 22 · first

Massachusetts State AGJan 22 · first

Indiana State AGJan 22 · first

New Hampshire State AGJan 22 · 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://mm.nh.gov/files/uploads/doj/remote-docs/landon-school-20210122.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Jan 22, 2021
Raw hash: 3fd853d5f4fef52ff53ab018793e5f9a0e623e7f5b35044e12a63376301afd6c

Linked disclosures

Regulatory filings (3) · sorted by filing gap

Reporting entityLandon School Corporation

Victim entityLandon School Corporation

Incidentdiscovered Jul 1, 2020

Stated responseEngaged independent forensics experts

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancemm.nh.gov