Social EngineeringManufacturingManufacturingPhishingCustomer Data InvolvedTargetedGovernment IDIdentity (basic)Financial accountMediumContained

Master Halco, Inc.

bd_858508b95c634d99 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Sep 14, 2020

Filed

Jan 25, 2021

To disclose

19 weeks

Affected

2state residents only

Linked

3 filings

Confidence

64%

Full breach record for Master Halco, Inc. →

Master Halco, Inc. notified the New Hampshire Attorney General of a phishing incident affecting employee email accounts between September 2 and 14, 2020. The breach exposed the personal information of two New Hampshire residents, including names, SSNs, driver's license numbers, and financial/payment card numbers. Master Halco engaged forensic investigators, secured accounts, and offered one year of credit monitoring via Experian to affected individuals. Notifications were mailed on January 22, 2021.

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Incident timeline

undetected · 12 days

discovery → filing · 19 weeks / 133 days

Sep 2, 2020

Begins

Sep 14, 2020

Discovered

Jan 25, 2021

Filed

This filing is one of 3 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (2) · sorted by filing gap

Massachusetts State AGbd_57464bf8176da1ef2021-01-22 · +3dVerified
Maine State AGbd_876167accf0c5a1a2021-01-22 · +3dCandidate

Name: Master Halco, Inc.
norm: master halco

Name: Master Halco, Inc.
norm: master halco
Industry: Manufacturingllm

Discovered: Sep 14, 2020
Breach occurred: Sep 2, 2020 – Sep 14, 2020
Undetected for: 12 daysoccurrence → discovery
Materiality determined: —
Notification sent: Jan 22, 2021
Affected individuals: 2state-resident count only
Data types: Government IDIdentity (basic)Financial account
Data elements: Social Security number
Attack vector: Phishing
MITRE ATT&CK: T1566.002 Spearphishing LinkT1078 Valid Accounts
Threat actor: ExternalFinancial
Initial access: phishing_link

During the incident: Secured the employees ' email accounts
Launched an investigation
A third-party cybersecurity forensics firm was engaged to assist
Reviewed the emails and attachments contained in the email accounts to identify individuals whose information may have been accessible to the unauthorized party
Offering residents with affected Social Security or driver ' s license numbers one year of complimentary credit monitoring and identity theft protection service through Experian
Providing a dedicated call center for individuals to call with any questions regarding the incident
Changes made: Implemented additional security measures to enhance the security of our network
Retrained our employees concerning data security
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 19 weeks(133 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 ↗

Massachusetts State AGJan 22 · first

Maine State AGJan 22 · first

New Hampshire State AG+3d · 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/master-halco-20210125.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Jan 25, 2021
Raw hash: f1f5b615c6dcf954b7194888c2ddb68bbdc1a32334023e08c969fb00703fad0e

Linked disclosures

Regulatory filings (2) · sorted by filing gap

Reporting entityMaster Halco, Inc.

Victim entityMaster Halco, Inc.

Incidentdiscovered Sep 14, 2020

Stated responseSecured the employees ' email accounts

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancemm.nh.gov