MalwareGovernmentGovernmentRansomwareData ExfiltratedData EncryptedRansom DemandedCustomer Data InvolvedPIIIdentity (basic)Government IDFinancial accountMediumContained

County of Norfolk, MA

bd_2de81440a3b05f53 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Oct 27, 2024

Filed

Dec 6, 2024

To disclose

6 weeks

Affected

Not disclosed

Linked

3 filings

Confidence

67%

Full breach record for County of Norfolk, MA →

County of Norfolk, MA experienced a ransomware attack discovered on October 27, 2024, where servers were encrypted and a ransom note was found. The threat actor claimed to have exfiltrated data. The County shut down network access and engaged forensic investigators. New Hampshire residents were notified and offered credit monitoring.

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Incident timeline

discovery → filing · 6 weeks / 40 days

Oct 27, 2024

Discovered

Dec 6, 2024

Filed

vs. sector median

5 wks faster

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_13348de1ec5641bb2024-12-06Verified
Maine State AGbd_de6dd732d1e169692024-12-06Candidate

Name: County of Norfolk, MA
norm: county of norfolk ma

Name: County of Norfolk, MA
norm: county of norfolk ma
Industry: Governmentllm

Discovered: Oct 27, 2024
Materiality determined: —
Notification sent: —
Affected individuals: Not disclosed
Data types: PIIIdentity (basic)Government IDFinancial account
Attack vector: Ransomware
MITRE ATT&CK: T1486 Data Encrypted for ImpactT1041 Exfiltration Over C2 Channel
Threat actor: ExternalFinancial
Regulator citations: Notified New Hampshire Office of the Attorney General

During the incident: Shutting off all access to the network
Engaging a specialized third-party forensic incident response firm to assist with securing and restoring the network environment and determining the extent of the compromise
Offering free credit monitoring through Cyberscout
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 6 weeks(40 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 AGDec 6 · first

Maine State AGDec 6 · first

New Hampshire State AGDec 6 · 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://mm.nh.gov/files/uploads/doj/remote-docs/county-norfolk-ma-20241206.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Dec 6, 2024
Raw hash: 4b86b9b34fb76ba52e679632f348dfff50a8212c58cfbbe3c905f12debd5581a

Linked disclosures

Regulatory filings (2) · sorted by filing gap

Reporting entityCounty of Norfolk, MA

Victim entityCounty of Norfolk, MA

Incidentdiscovered Oct 27, 2024

Stated responseShutting off all access to the network

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancemm.nh.gov