Was jms building corporation hit by ransomware?

jms building corporation was listed by the Incransom 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 Incransom ransomware group?

Incransom 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 jms building corporation breach?

Incransom published data attributed to jms building corporation. Darkfield captured the leak post and a screenshot of the listing.

Ransomware victim disclosure

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jms building corporation

Claimed by Incransom · listed 3 days ago

Age

since listed · data leaked

Status timeline

ListedSep 10, 2026
Data leakeddate unknown

At a glance

Group: Incransom
Status: Data leaked
Country: United States
Sector: Manufacturing
Listed on leak site: Sep 10, 2026

About the victim

AI dossier — public-source company profile

JMS Building Construction is a full-service insurance restoration construction company that handles the complete insurance restoration process, from insurance company coordination to home restoration. The company operates in the US residential restoration sector.

Industry: Insurance Restoration & Construction

Attack summary

Severity: high — Claimed exfiltration of customer PII, financial records, transaction databases, and business-sensitive data (NDAs, agreements) at an operational scale, though no proof files are advertised and no ransom demand is stated.

The incransom group claims to have exfiltrated confidential business documents, client data, financial records, NDAs, operational data, business agreements, and financial databases containing transaction and client information.

high

Data the group says was taken

AI dossier — extracted from the leak post

Confidential documents
Client personal data
NDAs
Financial data and databases
Transaction records
Corporate data
Business agreements
Operational records

What the group claims

JMS Building Construction is a full service Insurance Restoration construction company that handles every step of the Insurance Restoration process, from dealing with your insurance company to restoring your home's integrity WE HAS COLLECTED SUCH DATA AS: - Confidential documents - Clients Data - NDA - Financial data - Operations - Corporate data - Business Agreements - Development - Financial databases, all transactions, all clients And a lot of other VERY IMPORTANT information!

Sources

Leak posthttp://incblog6qu4y4mm4zvw5nrmue6qbwtgjsxpw6b7ixzssu36tsajldoad.onion/blog/disclosures/6a9e419a9cd108bf268b82e3

Source

Indexed 3 days 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 Incransom

Incransom is a ransomware group that emerged in August 2023, operating with primarily financial motivations as evidenced by their targeting of high-value sectors across multiple developed nations. The group's origin and specific affiliations remain undocumented by major threat intelligence organizations, though their operational patterns suggest they likely operate independently rather than as a ransomware-as-a-service model. With 734 documented victims, Incransom has demonstrated a preference for targeting organizations in the United States, Canada, United Kingdom, Germany, and Australia, with particular focus on healthcare, technology, business services, and manufacturing sectors, though their attack methodology and specific technical capabilities have not been extensively documented by established security researchers or government agencies. The group's notable campaigns and specific high-profile victims have not been publicly detailed by CISA, FBI, Mandiant, or other reputable threat intelligence sources, suggesting either operational security effectiveness or limited visibility into their most significant operations. Based on available intelligence, Incransom appears to remain active as of recent reporting periods, though comprehensive analysis of their current operational status requires additional documentation from established threat intelligence sources. The group has been linked to 1,792 public disclosures across our corpus. First observed on a leak site on September 9, 2021; most recent post September 10, 2026. The operation is currently active.

Also tracked as: inc ransom, INC.

Timeline of this disclosure

September 10, 2026jms building corporation listed by Incransom on the group's public leak site

Other recent disclosures by Incransom

Incransom has been linked to 1,792 public victims on Darkfield. A sample of the most recent:

See the full Incransom dossier →

Sector and geography

This disclosure adds to ransomware activity in the Manufacturing sector, which has 3,696 disclosures indexed across all operators we track. Geographically, jms building corporation is reported in United States, a country with 3,165 ransomware disclosures in our corpus.

If your organisation is affected

A listing by Incransom means jms building corporation 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 Incransom'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.