HackingOtherData ExfiltratedTargetedIdentity (basic)Financial accountMediumContained

The Sleepy Hollow Country Club

bd_c18c13726082d514 · schema v1 · pii pii-v1

Severity

Medium

Discovered

May 1, 2025

Filed

Sep 5, 2025

To disclose

18 weeks

Affected · nationwide

1,0723 in this filing

Linked

4 records

Confidence

66%

Full breach record for The Sleepy Hollow Country Club →

Sleepy Hollow Country Club reported an external system breach (hacking) on May 21, 2025, discovered in May 2025. The incident affected 1,072 individuals, including 3 Maine residents. Personal information accessed included names and financial information. The club notified the FBI, engaged cybersecurity specialists, and provided 12 months of credit monitoring to affected individuals.

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Maine clockDiscovered May 1, 2025 → Filed with AG Sep 5, 2025127d ⏱ ME AG >30d18 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

May 21, 2025

Begins

Sep 5, 2025

Filed

vs. sector median

+12 wks slower

This filing is one of 4 records about the same incident.View merged incident

A leak claim by akira about this victim was first seen 94 days before this filing.View originating leak claim

Linked disclosures

Why this link?

Ransomware claims (1)

Leak Siteakirabd_3f19fbe2f795632f2025-05-20 · +108dVerified by operator

Regulatory filings (2) · sorted by filing gap

Massachusetts State AGbd_280ceb3a5c82ce622025-09-05Verified
Nebraska State AGbd_5c9d6861cfe3db532025-09-05Verified

Name: The Sleepy Hollow Country Club
norm: the sleepy hollow country club
Domain: sleepyhollowcc.org

Name: The Sleepy Hollow Country Club
norm: the sleepy hollow country club
Domain: sleepyhollowcc.org
Industry: Otherllm

Discovered: May 1, 2025
Breach occurred: May 21, 2025
Materiality determined: —
Notification sent: Sep 5, 2025
Affected individuals: 1,072state + nationwide
Data types: Identity (basic)Financial account
Attack vector: Unauthorized Access
MITRE ATT&CK: T1190 Exploit Public-Facing Application
Threat actor: ExternalFinancial
Regulator citations: Notified U.S. federal law enforcement, including the Federal Bureau of Investigation (“FBI”)
Initial access: exploit_public_facing

During the incident: Took protective actions to stop the unauthorized access
Notified U.S. federal law enforcement, including the Federal Bureau of Investigation (“FBI”)
Assessed the security of our network and systems
Launched an investigation with the assistance of leading cybersecurity specialists
Installed monitoring devices on our IT systems to detect suspicious activity
Changes made: Working to implement additional safeguards
Providing potentially affected individuals with one (1) year of complimentary credit protection and monitoring services through Privacy Solutions at no cost to the individuals
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 18 weeks(127 days from discovery to filing)
Compliance flags: ME AG >30d · 127dLeak >90d
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 1, 2025
→ Filed with AG: Sep 5, 2025
127d 30 days (soft) ME AG >30d

Statute	Window	Elapsed	Threshold	Status
Maine	Discovered: May 1, 2025 → Filed with AG: Sep 5, 2025	127d	30 days (soft)	ME AG >30d

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 3 filings · 3 states

View merged incident ↗

Massachusetts State AGSep 5 · first

Nebraska State AGSep 5 · first

Maine State AGSep 5 · 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-a1252b4f8318/10f64bc9-fe12-496b-ad2b-5517fd8a821c.html
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Sep 5, 2025
Raw hash: 86ef58f6e9a7dd69a81005cd4f9efccea2e012400ad8d1b47426ee89f25f62f0

Linked disclosures

Ransomware claims (1)

Regulatory filings (2) · sorted by filing gap

Reporting entityThe Sleepy Hollow Country Club

Victim entityThe Sleepy Hollow Country Club

Incidentdiscovered May 1, 2025

Stated responseTook protective actions to stop the unauthorized access

ComplianceME AG >30d

Extraction provenanceno artifact recorded

Source provenancewww.maine.gov