Was Siegel Group hit by ransomware?

Siegel Group was listed by the Interlock ransomware operation (United States), and stolen data was published on the group's leak site. Darkfield tracks this disclosure with the original leak post, screenshot and group context.

Who is the Interlock ransomware group?

Interlock is a ransomware operator tracked by Darkfield. See the full operator dossier for its known victims, sectors targeted, IOCs and leak-site infrastructure.

What data was leaked in the Siegel Group breach?

Interlock published data attributed to Siegel Group (~11 TB). Darkfield captured the leak post and a screenshot of the listing.

Ransomware victim disclosure

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Siegel Group

Claimed by Interlock · listed 1 year ago

11 TB

Data size

16m

Age

since listed · data leaked

Status timeline

ListedFeb 21, 2025
Data leakeddate unknown

At a glance

Group: Interlock
Status: Data leaked
Country: United States
Sector: Hospitality and Tourism
Listed on leak site: Feb 21, 2025
Data size: 11 TB

About the victim

AI dossier — public-source company profile

The Siegel Group is a leading commercial real estate development and management company based in Las Vegas, Nevada and Studio City, California. They develop and operate multi-family housing, extended-stay properties, hospitality facilities, hotel-casinos, retail, office, industrial, and land development projects across multiple U.S. states.

Industry: Commercial Real Estate Development & Management; Hospitality (Hotels, Casinos, Resorts)
Address: 3790 Paradise Road, Suite 250, Las Vegas, NV

Attack summary

Severity: critical — Confirmed exfiltration of 11 TB of data including employee personal data (PII at scale) and complete SQL databases. Large-scale sensitive data exposure with no ransom demand suggests public disclosure phase of attack.

The Interlock ransomware group claims to have exfiltrated over 11 TB of company data, including SQL databases and personal data of all employees. No ransom demand is stated in the published post.

critical

Data the group says was taken

AI dossier — extracted from the leak post

SQL databases
Employee personal data
Unspecified company data

What the group claims

The Siegel Group, Inc. is a full service commercial real estate firm based in Las Vegas, Nevada and Studio City, California. It is a developer and operator of multi-family, extended stays, flexible stays, retail, hospitality, hotel-casinos, and land development. We present you more than 11TB of the company's data, here you will find the SQL databases, personal data of all employees and much more.

Sources

Victim sitesiegelcompanies.com
Leak posthttp://k6oor2g5bfvdxhxr2g6fczu3iqldbzyavydk56lh6z7ex7n7wqg4eryd.onion/index.php?p=

Source

Indexed 1 year 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 Interlock

Interlock is a recently emerged ransomware group that began operations in October 2024, primarily motivated by financial gain through extortion activities targeting organizations across multiple sectors. The group's country of origin and potential affiliations remain unclear given their recent emergence, with insufficient public documentation to determine whether they operate as an independent entity or under a Ransomware-as-a-Service model. Limited public information exists regarding their specific attack methodologies, initial access vectors, or encryption techniques, as major cybersecurity firms and law enforcement agencies have not yet published comprehensive technical analyses of their operations. Since beginning operations, Interlock has reportedly compromised approximately 100 victims, with their targeting primarily focused on organizations in English-speaking countries including the United States, Canada, United Kingdom, and Australia, as well as Italy, while demonstrating a preference for attacking education, manufacturing, healthcare, and public sector entities. The group remains active as of late 2024, though comprehensive threat intelligence profiles from established security research organizations have not yet been published due to the group's recent emergence in the threat landscape. The group has been linked to 114 public disclosures across our corpus. First observed on a leak site on October 13, 2024; most recent post July 10, 2026. The operation is currently active.

Timeline of this disclosure

February 21, 2025Siegel Group listed by Interlockon the group's public leak site

Data size: 11 TB

Other recent disclosures by Interlock

Interlock has been linked to 114 public victims on Darkfield. A sample of the most recent:

See the full Interlock 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, Siegel Group is reported in United States, a country with 11,033 ransomware disclosures in our corpus.

If your organisation is affected

A listing by Interlock means Siegel Group 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 Interlock'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.