UnknownGovernment IDHigh

HANOVER INSURANCE COMPANY, THE

bd_b8eac95422887ed2 · schema v1 · pii pii-v1

Severity

High

Discovered

—

Filed

Feb 26, 2021

To disclose

—

Affected

10,658state residents only

Linked

2 filings

Confidence

95%

Full breach record for HANOVER INSURANCE COMPANY, THE →4 incidents on file

The Hanover Insurance Company reported a data breach to the Massachusetts Office of Consumer Affairs and Business Regulation. The breach was reported on 2021-02-26. 10,658 Massachusetts residents were affected. The report records the breach type as electronic.

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Massachusetts clock✓ MA credit monitoring due

⚠ no discovery dateNo discovery date was extracted, so no notification clock can be evaluated.

Incident timeline — partial

? — ?

Breach window unknown

Feb 26, 2021

Filed

—

Corroborated · see linked filings

Compliance clocks stay unassessable until a regulatory filing lands. Dashed segments fill in automatically when corroboration arrives.

This filing is one of 2 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (1) · sorted by filing gap

Indiana State AGbd_7313560592cfe8932021-02-26Verified

Name: HANOVER INSURANCE COMPANY, THE
norm: hanover insurance company the

Name: HANOVER INSURANCE COMPANY, THE
norm: hanover insurance company the

Discovered: —
Materiality determined: —
Notification sent: —
Affected individuals: 10,658state-resident count only
Data types: Government ID
Data elements: Social Security numberDriver's licence number
Stated not affected: Financial account numberPayment card number
The filing states these were not involved. Categories absent from both lists were not addressed either way.
Attack vector: Unknown

Compliance flags: MA credit monitoring due
Discovery-date grounding: no discovery dateNo discovery date was extracted, so no notification clock can be evaluated.

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 2 filings · 2 states

View merged incident ↗

Indiana State AGFeb 26 · first

Massachusetts State AGFeb 26 · first · 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://www.mass.gov/doc/data-breach-report-2021/download
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Feb 26, 2021
Raw hash: ff4e733307dabaed41a51799b84d89f0faca5c48d1d428622bd8eb618d495289

Linked disclosures

Regulatory filings (1) · sorted by filing gap

Reporting entityHANOVER INSURANCE COMPANY, THE

Victim entityHANOVER INSURANCE COMPANY, THE

IncidentUnknown

ComplianceMA credit monitoring due

Extraction provenanceno artifact recorded

Source provenancewww.mass.gov