MalwareEducationEducationRansomwareSupply Chain (3P Vendor)Data ExfiltratedRansom DemandedRansom PaidCustomer Data InvolvedIdentity (basic)Government IDMediumContained

Stanley Clark School, The

bd_d1ef7faf7f6249a1 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Sep 29, 2020

Filed

Mar 5, 2021

To disclose

22 weeks

Affected

3state residents only

Linked

2 filings

Confidence

65%

Full breach record for Stanley Clark School, The →

Stanley Clark School, The (NH) notified the NH Attorney General of a ransomware attack on third-party vendor Blackbaud. The attack occurred Feb-May 2020, affecting 3 NH residents. Exposed data included names, addresses, DOB, and SSN/TIN. Blackbaud paid ransom and restored systems. Stanley Clark issued amended notifications in Feb 2021, providing 24 months of credit monitoring.

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Incident timeline

undetected · 222 days

discovery → filing · 22 weeks / 157 days

Feb 20, 2020

Begins

Sep 29, 2020

Discovered

Mar 5, 2021

Filed

vs. sector median

+14 wks slower

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

Linked disclosures

Why this link?

Regulatory filings (1) · sorted by filing gap

Massachusetts State AGbd_8c1c4f24e72e8c2c2021-03-05Verified

Name: Stanley Clark School, The
norm: stanley clark school the

Name: Stanley Clark School, The
norm: stanley clark school the
Industry: Educationllm

Discovered: Sep 29, 2020
Breach occurred: Feb 20, 2020 – May 20, 2020
Undetected for: 222 daysoccurrence → discovery
Materiality determined: —
Notification sent: Feb 26, 2021
Affected individuals: 3state-resident count only
Data types: Identity (basic)Government ID
Data elements: Date of birth
Attack vector: Ransomware
MITRE ATT&CK: T1486 Data Encrypted for ImpactT1195 Supply Chain Compromise
Threat actor: ExternalFinancial
Initial access: supply_chain

During the incident: Sent statutory notification letters to all impacted persons
Provided credit monitoring services
Contacted counsel to handle returned mail
Issued amended notices with statutory requirements
Purchased new valid addresses for returned mail
Changes made: Blackbaud implemented changes to their data security protocols
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 22 weeks(157 days from discovery to filing)
Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 2 filings · 2 states

View merged incident ↗

Massachusetts State AGMar 5 · first

New Hampshire State AGMar 5 · 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/stanley-clark-school-20210305.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Mar 5, 2021
Raw hash: e3f48ebeb957a0424b0be44a4ba2babd3397590a9641eea8fe15911784c4ebbb

Linked disclosures

Regulatory filings (1) · sorted by filing gap

Reporting entityStanley Clark School, The

Victim entityStanley Clark School, The

Incidentdiscovered Sep 29, 2020

Stated responseSent statutory notification letters to all impacted persons

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancemm.nh.gov