HackingManufacturingManufacturingCustomer Data InvolvedPIIIdentity (basic)LowContained

Boart Longyear Limited

bd_1e4efe29bb39f386 · schema v1 · pii pii-v1

Severity

Low

Discovered

Aug 31, 2024

Filed

Mar 7, 2025

To disclose

27 weeks

Affected

1state residents only

Linked

5 filings

Confidence

65%

Full breach record for Boart Longyear Limited →2 incidents on file

Boart Longyear Group, Ltd. notified the New Hampshire Attorney General of a data security incident. Unauthorized access occurred between June 29 and August 31, 2024. The breach affected one New Hampshire resident's personal information. Boart Longyear engaged a cybersecurity firm, secured the network, and mailed notification letters on March 6, 2025, offering two years of Experian credit monitoring.

J jump to incidentP pin to compareR raw source

Incident timeline

undetected · 63 days

discovery → filing · 27 weeks / 188 days

Jun 29, 2024

Begins

Aug 31, 2024

Discovered

Mar 7, 2025

Filed

vs. sector median

+16 wks slower

This filing is one of 5 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (4) · sorted by filing gap

Maine State AGbd_1dfce352b8e470dc2025-03-07Candidate
Massachusetts State AGbd_61e703a1bca591d52025-03-07Verified
Maryland State AGbd_dab2cdba014b34902025-03-07Verified
Vermont State AGbd_a8db7dc04c0a3d122025-03-06 · +1dVerified

Name: Boart Longyear Limited
norm: boart longyear-au

Name: Boart Longyear Limited
norm: boart longyear-au
Industry: Manufacturingllm

Discovered: Aug 31, 2024
Breach occurred: Jun 29, 2024 – Aug 31, 2024
Undetected for: 63 daysoccurrence → discovery
Materiality determined: —
Notification sent: Mar 6, 2025
Affected individuals: 1state-resident count only
Data types: PIIIdentity (basic)
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid Accounts
Threat actor: External
Initial access: valid_credentials

During the incident: Took steps to secure the network
Commenced an investigation
Engaged a cybersecurity firm to assist
Mailed a notification letter via United States Postal Service First-Class mail
Offered credit monitoring and identity theft protection services through Experian
Provided a phone number for individuals to call with questions
Changes made: Implemented additional security measures to enhance already existing cybersecurity protocols
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 27 weeks(188 days from discovery to filing)
Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 5 filings · 5 states

View merged incident ↗

Vermont State AGMar 6 · first

Maine State AG+1d

Massachusetts State AG+1d

Maryland State AG+1d

New Hampshire State AG+1d · 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/boart-longyear-20250307.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Mar 7, 2025
Raw hash: 958de8d9d3517f20f6822056a61d7473a466e3986f8efd7319aad02669595fc3

Linked disclosures

Regulatory filings (4) · sorted by filing gap

Reporting entityBoart Longyear Limited

Victim entityBoart Longyear Limited

Incidentdiscovered Aug 31, 2024

Stated responseTook steps to secure the network

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancemm.nh.gov