HackingEducationEducationStolen CredentialsData ExfiltratedCustomer Data InvolvedIdentity (basic)Government IDMediumContained

Trustees of Thayer Academy

bd_492ab02e0fc32653 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Feb 4, 2023

Filed

May 17, 2024

To disclose

16 months

Affected

229state residents only

Linked

10 records

Confidence

66%

Full breach record for Trustees of Thayer Academy →3 incidents on file

Thayer Academy notified NH AG of a security incident where unauthorized access to its network occurred. The academy detected the access on February 4, 2023, but determined personal information was accessed on April 22, 2024. Approximately 229 NH residents were affected. Data included names and government IDs. Thayer engaged forensic investigators and offered credit monitoring.

J jump to incidentP pin to compareR raw source

Leak gap clock✗ Leak >180d16 months 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

discovery → filing · 16 months / 468 days

Feb 4, 2023

Discovered

May 17, 2024

Filed

This filing is one of 10 records about the same incident.View merged incident

A leak claim by 8base about this victim was first seen 360 days before this filing.View originating leak claim

Linked disclosures

Why this link?

Ransomware claims (1)

Leak Site8basebd_96b5b139261130fb2023-02-07 · +465dVerified by operator

Regulatory filings (8) · sorted by filing gap

California State AGbd_3ffe3dae1869939f2024-05-14 · +3dCandidate
Maine State AGbd_49c60a5208adebc82024-05-14 · +3dVerified by operator
Vermont State AGbd_4aa41aa9cd13361e2024-05-14 · +3dVerified
Indiana State AGbd_8da44123166c6bd62024-05-14 · +3dVerified by operator

Show 4 more filings ↓up to 409d gap

Montana State AGbd_bc5e852ed08e848d2024-05-14 · +3dVerified by operator
New Hampshire State AGbd_6632ee50ea5f55282023-04-10 · +403dVerified by operator
Massachusetts State AGbd_36883f454589a2ec2023-04-05 · +408dVerified by operator
Vermont State AGbd_83e2da09ee9cc9c12023-04-04 · +409dVerified by operator

Name: Trustees of Thayer Academy
norm: trustees of thayer academy
Domain: thayer.org

Name: Trustees of Thayer Academy
norm: trustees of thayer academy
Domain: thayer.org
Industry: Educationllm

Discovered: Feb 4, 2023
Materiality determined: —
Notification sent: May 14, 2024
Affected individuals: 229state-resident count only
Data types: Identity (basic)Government ID
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid Accounts
Threat actor: External
Regulator citations: Notified New Hampshire Office of the Attorney General Consumer Protection Bureau
Initial access: valid_credentials

During the incident: Engaged external cybersecurity professionals experienced in handling these type of incidents to conduct an investigation
Contained the threat
Provided affected residents with notification of this incident
Offering the affected residents with complimentary credit monitoring services
Changes made: Continues to evaluate and improve, where appropriate, its administrative and technical safeguards
Training its employees on best practices related to cybersecurity, policies, procedures, and protocols, and tools to protect its network environment
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 16 months(468 days from discovery to filing)
Compliance flags: Leak >180d
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.

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 9 filings · 7 states

View merged incident ↗

Vermont State AGApr 4 · first

Massachusetts State AG+1d

New Hampshire State AG+6d

California State AG+406d

Maine State AG+406d

Vermont State AG+406d

Indiana State AG+406d

Montana State AG+406d

New Hampshire State AG+409d · this page

Pattern: first filing Apr 4 (VT), last May 17 (NH) — a 409-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/thayer-academy-20240517.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: May 17, 2024
Raw hash: ed9c70cc367aae59d55a52e17d903c75cbac7d145cdf1dac7d57ed09012b4bd7

Linked disclosures

Ransomware claims (1)

Regulatory filings (8) · sorted by filing gap

Reporting entityTrustees of Thayer Academy

Victim entityTrustees of Thayer Academy

Incidentdiscovered Feb 4, 2023

Stated responseEngaged external cybersecurity professionals experienced in handling these type of incidents to conduct an investigation

ComplianceLeak >180d

Extraction provenanceno artifact recorded

Source provenancemm.nh.gov