UnknownManufacturingManufacturingCustomer Data InvolvedPIIIdentity (basic)LowContained

HarbisonWalker International Holdings, Inc.

bd_a9351ff7aa890b2f · schema v1 · pii pii-v2

Severity

Low

Discovered

—

Filed

Sep 1, 2026

To disclose

—

Affected

56state residents only

Confidence

69%

Full breach record for HarbisonWalker International Holdings, Inc. →2 incidents on file

HarbisonWalker International, Inc. notified Massachusetts residents of a cybersecurity incident involving its internal network that may have affected personal information. The company secured its network, reported the incident to authorities, and is offering 24 months of credit monitoring. No specific attack vector, dates of occurrence, or number of affected individuals were disclosed in the notice.

J jump to incidentP pin to compareR raw source

Incident timeline — partial

? — ?

Breach window unknown

Sep 1, 2026

Filed

No interval is drawn: no breach start or discovery date is on record for this filing.

Tracked as a single-filing incident — the only disclosure on record for this event so far.Confirmed56 affectedView incident

Name: HarbisonWalker International Holdings, Inc.
norm: harbisonwalker international

Name: HarbisonWalker International Holdings, Inc.
norm: harbisonwalker international
Industry: Manufacturingllm

Discovered: —
Materiality determined: —
Notification sent: Sep 22, 2026
Affected individuals: 56state-resident count only
Data types: PIIIdentity (basic)
Attack vector: Unknown
Regulator citations: Reported the incident to the appropriate government authorities and federal law enforcement agencies

During the incident: Took steps to secure our network, assess the security of our systems, and investigate the activity
Reported the incident to the appropriate government authorities and federal law enforcement agencies
Notifying potentially impacted parties such as yourself and providing them with resources that they may consider to protect their data
Continue to review and enhance our security measures, policies and procedures where appropriate
Changes made: Offering access to twenty-four (24) months of complimentary credit monitoring and identity theft protection services through Experian
Source: Quoted from the filing itself, not independently verified.

Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

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://www.mass.gov/doc/2026-1599-harbisonwalker-international-inc/download
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Sep 1, 2026
Raw hash: 78bd62f6663e1c8f97f9429b7ea33dc480967569f2b7cca4e0ce6de0b0f45ccc

Reporting entityHarbisonWalker International Holdings, Inc.

Victim entityHarbisonWalker International Holdings, Inc.

IncidentUnknown

Stated responseTook steps to secure our network, assess the security of our systems, and investigate the activity

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancewww.mass.gov