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

CENTRAL SECURITIES CORPORATION

bd_3e34accc2e6a85e7 · schema v1 · pii pii-v1

Severity

Medium

Discovered

May 20, 2024

Filed

Sep 30, 2024

To disclose

19 weeks

Affected · nationwide

6243 in this filing

Linked

5 filings

Confidence

66%

Full breach record for CENTRAL SECURITIES CORPORATION →

Central Securities Corporation, a closed-end investment management company, disclosed a cybersecurity incident where an unauthorized third party accessed internal systems via a compromised vendor account between April 17 and May 20, 2024. The breach exposed personal information including names, SSNs, and government IDs of 624 individuals. The company engaged forensic experts, notified law enforcement, terminated vendor access, and offered 24 months of credit monitoring.

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Maine clockDiscovered May 20, 2024 → Filed with AG Sep 30, 2024133d ✗ ME AG >90d19 weeks discovery → filing

⚠ unattributedNo provenance was recorded for this discovery date and it matches no other date on the record. It may be correct, but it is not independently grounded.

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

Linked disclosures

Why this link?

Ransomware claims (1)

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

Regulatory filings (3) · sorted by filing gap

Indiana State AGbd_9dfb83fe07bfdcac2024-09-30Verified
Massachusetts State AGbd_a498a58822cddbf72024-09-30Verified
New Hampshire State AGbd_da8e4d2e5088976a2024-09-30Verified

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

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

Discovered: May 20, 2024
Breach occurred: Apr 17, 2024 – May 20, 2024
Undetected for: 33 daysoccurrence → discovery
Materiality determined: —
Notification sent: Sep 30, 2024
Affected individuals: 624state + nationwide
Data types: Identity (basic)Government ID
Data elements: Social Security number
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 Maine Attorney General
Initial access: trusted_relationship

During the incident: Engaged leading third-party cybersecurity and forensic experts
Notified law enforcement and is cooperating with their investigation
Terminated the relevant vendor’s access to our systems
Offering 24 months of Experian IdentityWorks credit monitoring and call center support
Changes made: Evaluating the security of all third-party access to our systems
Implemented additional security protocols designed to further enhance the security of our network, internal systems, data, and applications
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 19 weeks(133 days from discovery to filing)
Compliance flags: ME AG >90d · 133dME resident >60d · 133d
Discovery-date grounding: unattributedNo provenance was recorded for this discovery date and it matches no other date on the record. It may be correct, but it is not independently grounded.
Clock breakdown: Statute Window Elapsed Threshold Status
Maine
Discovered: May 20, 2024
→ Filed with AG: Sep 30, 2024
133d 90 days ME AG >90d
Maine
Discovered: May 20, 2024
→ Notified: Sep 30, 2024
133d 60 days (analyst band; statutory cap is 30 days) ME resident >60d

Statute	Window	Elapsed	Threshold	Status
Maine	Discovered: May 20, 2024 → Filed with AG: Sep 30, 2024	133d	90 days	ME AG >90d
Maine	Discovered: May 20, 2024 → Notified: Sep 30, 2024	133d	60 days (analyst band; statutory cap is 30 days)	ME resident >60d

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 4 filings · 4 states

View merged incident ↗

Indiana State AGSep 30 · first

Massachusetts State AGSep 30 · first

New Hampshire State AGSep 30 · first

Maine 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://www.maine.gov/agviewer/content/ag/985235c7-cb95-4be2-8792-a1252b4f8318/91df39fb-6487-42bc-8a25-41a9641e3b3a.html
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: 0f5195cc3a51e669acad7a186f6eef6104a0def906827806ad4718b0c2472df3

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

ComplianceME AG >90d

Extraction provenanceno artifact recorded

Source provenancewww.maine.gov