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The Country Club of Darien

Claimed by Nightspire · listed 3 months ago

600 GB
Data size
2m
Age
since listed · data leaked

Status timeline

  1. ListedMay 1, 2026
  2. Data leakeddate unknown

At a glance

Group
Nightspire
Status
Data leaked
Country
United States
Sector
Hospitality and Tourism
Listed on leak site
May 1, 2026
Data size
600 GB

About the victim

AI dossier — public-source company profile

The Country Club of Darien is a private members club located in Darien, Connecticut, USA. It provides golf, dining, social, and recreational amenities to its members and their guests. As a private club it serves a predominantly affluent local membership base in Fairfield County.

Industry
Private Members Club & Hospitality
Address
300 Mansfield Avenue, Darien, CT 06820
Employees
51-200

Attack summary

Severity: high — Data has been confirmed published (disclosed status: data_published), meaning exfiltration is not merely claimed but enacted. The data inventory includes business administration and commercial operations records which likely contain member PII, financial, and contact information for an affluent private membership base, constituting significant sensitive data exposure.

Nightspire claims to have exfiltrated business data from The Country Club of Darien and has published the data, with disclosed categories spanning commercial operations, business administration, software and digital assets, and branding materials.

high

Data the group says was taken

AI dossier — extracted from the leak post
  • Sales / agent / commercial operations data
  • Industrial / manufacturing / tooling business data
  • Research & development / technical project data
  • Business admin / office operations data
  • Software / digital assets / branding materials

What the group claims

- Sales / agent / commercial operations- Industrial / manufacturing / tooling business data- Research & development / technical project data- Business admin / office operations- Software / digital assets / branding

The leak post

captured from the group's site
Data is not available now.
More than 3000+ Patient's EHR Records
Data is not available now.
Data is not available now.
- Active Print Production- Direct Mail / Variable Data Mailing Jobs- Accounting & Financial records- Font Library- Client Communications/Quotes
- Financial & Accounting Records- Sensitive Employee- Youth Participant & Child Protection Records- Governance & Legal Documents
- Financial Documents- HR Data- Supervisor's Information
Data is not available now.
Data is not available now.
[la familia adualt day center](http://www.lafamiliaadultdaycenter.com)
Data is not available now.
Data is not available now.
- QuickBooks Files- Scanned tax returns- Proposal, Contrats- QuickBooks automated backups
- Banking & Financial Records- Personal data- Critical POS Data
- Banking & Financial Data- Accounting & Tax Records
- Financial & Accounting Records- Human Resources- Sales & Marketing
- Sales Related Documents- Human Resources- Sensitive Employee Records- Email and SMS Data
Data is not available now.
- Technical Documents- Financial Sheets- Contracts & Invoices- Business strategy files
- MSSQL-DB- HR Documents- Contracts
Data is not available now.
[Progressive Oral Surgery & …

Source

Indexed 3 months ago

This page surfaces a public ransomware disclosure indexed by Darkfield. Original posts come from the operator's own leak site; we cross-check against ransomware.live, RansomLook and RansomWatch where applicable. Share this URL freely.

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Disclosure context

About nightspire

Nightspire is a ransomware group that first emerged in March 2025 and appears to be primarily financially motivated, having targeted over 215 victims in a relatively short operational timeframe. The group's origin and affiliations remain unclear due to limited public documentation from major cybersecurity organizations, though their targeting patterns suggest a broad opportunistic approach rather than nation-state backing. Based on available victim data, Nightspire appears to employ common ransomware attack vectors targeting organizations across multiple sectors, with a particular focus on manufacturing, technology, healthcare, and construction industries, while demonstrating a geographic preference for victims in the United States, India, Taiwan, France, and Hong Kong. The group's rapid victim acquisition rate since their March 2025 emergence suggests an active and potentially effective operational capability, though specific technical details about their attack methodology, encryption techniques, or extortion tactics have not been publicly documented by major threat intelligence firms. Given the recent emergence of this group and limited public reporting from established cybersecurity organizations like CISA, FBI, or Mandiant, Nightspire remains an active threat with insufficient public documentation to fully assess their operational sophistication or organizational structure. The group has been linked to 315 public disclosures across our corpus. First observed on a leak site on March 12, 2025; most recent post July 14, 2026. The operation is currently active.

Also tracked as: NIGHT SPIRE.

Timeline of this disclosure

  • May 1, 2026The Country Club of Darien listed by nightspireon the group's public leak site
Data size
600 GB

Other recent disclosures by nightspire

nightspire has been linked to 315 public victims on Darkfield. A sample of the most recent:

See the full nightspire dossier →

Sector and geography

This disclosure adds to ransomware activity in the Hospitality and Tourism sector, which has 452 disclosures indexed across all operators we track. Geographically, The Country Club of Darien is reported in United States, a country with 3,115 ransomware disclosures in our corpus.

If your organisation is affected

A listing by nightspire means The Country Club of Darien appeared on a ransomware extortion site and data attributed to it has been published. If this is your organisation, or a supplier you depend on, the priority is to confirm the intrusion and contain it before the window to act closes.

  • Engage your incident-response team and preserve forensic evidence before remediating — do not wipe affected systems first.
  • Force a password reset and revoke active sessions for exposed accounts; rotate any credentials, API keys or certificates that may have been in the stolen data.
  • Assess regulatory notification duties (GDPR, NIS2, sector regulators) — many carry a 72-hour reporting clock from awareness.
  • Report the incident to your national CERT, CISA (United States), as required for your jurisdiction.
  • Monitor for the data appearing on nightspire's leak site and across paste and breach channels, and brief downstream partners who may be exposed through you.

How we know this. Darkfield monitors public ransomware leak sites continuously, archiving every new disclosure and the data later released against the victim. Each entry on this page is sourced from the operator's own publication and cross-checked against complementary OSINT feeds (RansomLook, ransomware.live, RansomWatch). We do not collect or host stolen data — only the metadata, timestamps and screenshots needed to make the public disclosure searchable and accountable. Records here are corrected when the original post is edited, retracted, or merged with another disclosure.