HackingFinancial ServicesFinanceStolen CredentialsSupply Chain (3P Vendor)Data ExfiltratedCustomer Data InvolvedIdentity (basic)LowContained

CENTRAL SECURITIES CORPORATION

bd_da8e4d2e5088976a · schema v1 · pii pii-v1

Severity

Low

Discovered

May 20, 2024

Filed

Sep 30, 2024

To disclose

19 weeks

Affected

7state residents only

Linked

5 filings

Confidence

66%

Full breach record for CENTRAL SECURITIES CORPORATION →

Central Securities Corporation, a closed-end investment management company, notified the New Hampshire Attorney General of a cybersecurity incident. An unauthorized third party accessed internal systems on or about April 17, 2024, via a legitimate account of a third-party vendor. The actor exfiltrated data containing names and other personal information of seven New Hampshire residents on or about May 20, 2024. Central Securities discovered the activity on May 20, 2024, engaged forensic experts, notified law enforcement, terminated the vendor's access, and began mailing notifications on September 30, 2024, offering credit monitoring services.

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Leak gap clock⏱ Leak >90d19 weeks discovery → filing

Incident timeline

undetected · 33 days

discovery → filing · 19 weeks / 133 days

Apr 17, 2024

Begins

May 20, 2024

Discovered

Sep 30, 2024

Filed

vs. sector median

+10 wks slower

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

A leak claim by underground about this victim predates this filing by 138 days.View originating leak claim

Linked disclosures

Why this link?

Ransomware claims (1)

Leak Siteundergroundbd_d43ddf1ce3a7ba142024-05-15 · +138dVerified by operator

Regulatory filings (3) · sorted by filing gap

Maine State AGbd_3e34accc2e6a85e72024-09-30Candidate
Indiana State AGbd_9dfb83fe07bfdcac2024-09-30Verified
Massachusetts State AGbd_a498a58822cddbf72024-09-30Verified

Name: CENTRAL SECURITIES CORPORATION
norm: central securities
Domain: centralsecurities.com

Name: CENTRAL SECURITIES CORPORATION
norm: central securities
Domain: centralsecurities.com
Industry: Financial Servicesllm

Discovered: May 20, 2024
Breach occurred: Apr 17, 2024
Undetected for: 33 daysoccurrence → discovery
Materiality determined: —
Notification sent: Sep 30, 2024
Affected individuals: 7state-resident count only
Data types: Identity (basic)
Attack vector: Third-Party / Supply Chain
MITRE ATT&CK: T1195 Supply Chain CompromiseT1078 Valid AccountsT1041 Exfiltration Over C2 Channel
Threat actor: ExternalFinancial
Regulator citations: Notified New Hampshire Department of Justice
Initial access: trusted_relationship

During the incident: Engaged leading third-party cybersecurity and forensic experts to respond to the issue and assist with remediation efforts
Notified law enforcement and has been cooperating with their investigation
Offering complimentary credit monitoring and fraud protection services
Mailing notification letters to affected individuals
Changes made: Terminated the relevant vendor’s access to its systems
Evaluating the security of all third-party access to its systems
Implemented additional security protocols designed to further enhance the security of its network, internal systems, data, and applications
Continuing to evaluate additional steps that may be taken to further increase defenses
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 19 weeks(133 days from discovery to filing)
Compliance flags: Leak >90d
Discovery-date grounding: letter-groundedThe discovery date is the detection date narrated in the notification letter — the defensible tier.

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 4 filings · 4 states

View merged incident ↗

Maine State AGSep 30 · first

Indiana State AGSep 30 · first

Massachusetts State AGSep 30 · first

New Hampshire State AGSep 30 · 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/central-securities-20240930.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Sep 30, 2024
Raw hash: e869eb00d0f79342f2e1f1c9b76b17fdada349330e46487ebbda705dc75a86db

Linked disclosures

Ransomware claims (1)

Regulatory filings (3) · sorted by filing gap

Reporting entityCENTRAL SECURITIES CORPORATION

Victim entityCENTRAL SECURITIES CORPORATION

Incidentdiscovered May 20, 2024

Stated responseEngaged leading third-party cybersecurity and forensic experts to respond to the issue and assist with remediation efforts

ComplianceLeak >90d

Extraction provenanceno artifact recorded

Source provenancemm.nh.gov