Was Constellation HomeBuilder Systems hit by ransomware?

Constellation HomeBuilder Systems was listed by the unsafe 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 unsafe ransomware group?

unsafe 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 Constellation HomeBuilder Systems breach?

unsafe published data attributed to Constellation HomeBuilder Systems. Darkfield captured the leak post and a screenshot of the listing.

Ransomware victim disclosure

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Constellation HomeBuilder Systems

Claimed by Unsafe · listed 4 hours ago

Today

Age

since listed · data leaked

Status timeline

ListedAug 9, 2026
Data leakeddate unknown

At a glance

Group: Unsafe
Status: Data leaked
Country: United States
Sector: Manufacturing
Listed on leak site: Aug 9, 2026

About the victim

AI dossier — public-source company profile

Constellation HomeBuilder Systems is a company operating in the residential construction and home building sector. Based on the victim name and leak post context, the company maintains business operations involving databases, corporate documentation, and customer/vendor communications.

Industry: Residential Construction & Home Building

Attack summary

Severity: medium — Confirmed exfiltration of business data including internal communications, financial records (invoices), and contact information at company scale, but no evidence of personal/regulated data at mass scale or operational disruption. Post offers private sale rather than public disclosure, suggesting moderate monetization intent.

The group claims to have exfiltrated a full database containing corporate documents, contact emails, business conversations, and invoices. The operator is offering the data for private sale.

medium

Data the group says was taken

AI dossier — extracted from the leak post

corporate database
business documents
corporate email accounts
business communications
invoices
contact information

What the group claims

Revenue: $138.1M

The leak post

captured from the group's site

```
Available full database containing all related documents, corporate contact emails, conversations, and invoices.
If you’re interested in purchasing it privately, please contact me through the contact page.
```

Sources

Source

Indexed 4 hours 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 unsafe

The "unsafe" ransomware group is a relatively new threat actor that emerged in December 2022, operating with primarily financial motivations through ransomware deployment and extortion schemes. Based on limited public documentation, the group's origin and specific affiliations remain unclear, though their operational patterns suggest they function as an independent ransomware operation rather than a established Ransomware-as-a-Service model. With 14 documented victims since their emergence, the group has demonstrated a focused targeting approach, primarily concentrating their attacks on manufacturing organizations, transportation and logistics companies, and government entities across the United States, Switzerland, and France. Their attack methodology and specific technical capabilities have not been extensively documented by major security research organizations such as CISA, FBI, or Mandiant, limiting detailed analysis of their initial access vectors, encryption methods, or data exfiltration practices. No major high-profile campaigns or significant law enforcement actions have been publicly reported against this group, likely due to their relatively recent emergence and smaller scale of operations compared to more established ransomware families. Current intelligence suggests the group remains active as of available reporting, though their limited public footprint makes definitive status assessment challenging without additional threat intelligence sources. The group has been linked to 19 public disclosures across our corpus. First observed on a leak site on December 21, 2022; most recent post August 9, 2026. The operation is currently inactive.

Timeline of this disclosure

August 9, 2026Constellation HomeBuilder Systems listed by unsafeon the group's public leak site

Other recent disclosures by unsafe

unsafe has been linked to 19 public victims on Darkfield. A sample of the most recent:

See the full unsafe dossier →

Sector and geography

This disclosure adds to ransomware activity in the Manufacturing sector, which has 3,692 disclosures indexed across all operators we track. Geographically, Constellation HomeBuilder Systems is reported in United States, a country with 3,159 ransomware disclosures in our corpus.

If your organisation is affected

A listing by unsafe means Constellation HomeBuilder Systems 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 unsafe'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.