MalwareEducationEducationRansomwareSupply Chain (3P Vendor)Data ExfiltratedCustomer Data InvolvedRansom DemandedGovernment IDIdentity (basic)MediumContained

Archbishop Mitty High School

bd_b7f0b609aa69e161 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Sep 29, 2020

Filed

Jun 22, 2021

To disclose

38 weeks

Affected

1state residents only

Linked

3 filings

Confidence

66%

Full breach record for Archbishop Mitty High School →

Archbishop Mitty High School notified the NH AG of a third-party ransomware incident involving cloud provider Blackbaud. The attack occurred in May 2020; the school was notified in Sept 2020. One NH resident's SSN and PII were exposed. Notification sent June 16, 2021, offering 24 months of credit monitoring.

J jump to incidentP pin to compareR raw source

Incident timeline

undetected · 151 days

discovery → filing · 38 weeks / 266 days

May 1, 2020

Begins

Sep 29, 2020

Discovered

Jun 22, 2021

Filed

vs. sector median

+28 wks slower

This filing is one of 3 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 (2) · sorted by filing gap

California State AGbd_5bd90ff714a68a5e2021-06-16 · +6dCandidate
Montana State AGbd_d54320e159f150e92021-06-16 · +6dVerified by operator

Name: Wilson, Elser, Moskowitz, Edelman & Dicker LLP
norm: wilson elser moskowitz edelman dicker
Domain: wilsonelser.com

Name: Archbishop Mitty High School
norm: archbishop mitty high school
Industry: Educationllm

Discovered: Sep 29, 2020
Breach occurred: May 1, 2020 – May 31, 2020
Undetected for: 151 daysoccurrence → discovery
Materiality determined: —
Notification sent: Jun 16, 2021
Affected individuals: 1state-resident count only
Data types: Government IDIdentity (basic)
Data elements: Social Security numberDate of birth
Attack vector: Third-Party / Supply Chain
MITRE ATT&CK: T1486 Data Encrypted for ImpactT1041 Exfiltration Over C2 Channel
Threat actor: ExternalFinancial
Regulator citations: Notified New Hampshire Office of the Attorney General
Third party: via Blackbaud, Inc.
Initial access: supply_chain

During the incident: Launched an investigation to determine which of its community were impacted
Mailed incident notification letters addressed to all potentially affected New Hampshire residents
Offering notified individuals whose social security numbers were exposed complimentary identity theft and credit monitoring services for a period of twenty-four (24) months
Continue to monitor the situation and be in close contact with Blackbaud
Changes made: Taken steps to prevent a similar incident from occurring in the future
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 38 weeks(266 days from discovery to filing)
Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 3 filings · 3 states

View merged incident ↗

California State AGJun 16 · first

Montana State AGJun 16 · first

New Hampshire State AG+6d · this page

Pattern: first filing Jun 16 (CA), last Jun 22 (NH) — a 6-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://mm.nh.gov/files/uploads/doj/remote-docs/archbishop-mitty-20210622.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Jun 22, 2021
Raw hash: 135f3d86fed9f1d549f6ad48ab7b67ff388df7398dba782be418b8d5f4b019ac

Linked disclosures

Regulatory filings (2) · sorted by filing gap

Reporting entityWilson, Elser, Moskowitz, Edelman & Dicker LLP

Victim entityArchbishop Mitty High School

Incidentdiscovered Sep 29, 2020

Stated responseLaunched an investigation to determine which of its community were impacted

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancemm.nh.gov