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City of Fort Smith Arkansas

Claimed by Interlock · listed 12 hours ago

Today
Age
since listed · data leaked

Status timeline

  1. ListedSep 15, 2026
  2. Data leakeddate unknown

At a glance

Group
Interlock
Status
Data leaked
Country
United States
Sector
Government & Defense
Listed on leak site
Sep 15, 2026

About the victim

AI dossier — public-source company profile

The City of Fort Smith is a municipal government entity in Arkansas providing public services including public safety (police, fire, emergency dispatch), water utilities, and administrative systems to residents and organizations in the city.

Industry
Government & Defense
Address
Fort Smith, Arkansas, US

Attack summary

Severity: critical — Confirmed exfiltration of large-scale PII (100,000+ SSNs), regulated law enforcement databases (CJIS), 911/emergency infrastructure data, and critical water utility systems affecting public safety and essential services.

The interlock group claims to have exfiltrated approximately 5.6 TB of confidential municipal data, including public safety systems, water infrastructure, and law enforcement records. The leaked data reportedly includes over 100,000 SSNs, police reports with photos, 911 call databases, driver's license and license plate information, and water treatment facility data.

critical

Data the group says was taken

AI dossier — extracted from the leak post
  • Social Security Numbers (100,000+)
  • Police reports and incident files
  • 911 call database and incident logs
  • Personally identifiable information (names, addresses, phone numbers)
  • Driver's license and license plate records
  • Law enforcement records from Arkansas Crime Information Center and FBI CJIS
  • Water treatment and sewer system data
  • City infrastructure specifications
  • Phone data dumps and forensic software

What the group claims

The City of Fort Smith is committed to providing high-quality, resident-focused services to foster a thriving community. This is how they try to position themselves, but in reality, they are very negligent towards their residents and organizations within the city due to their negligent attitude towards security and lack of desire to solve problems, were compromised resulting in a major leak of confidential data over 5.6 TB of data, which includes key infrastructure facilities of Fort Smith (Public Safety System: Police Station, Fire Department, Communications Center (responsible for the 911 emergency dispatch service), Water System: including numerous water and sewer treatment plants, Information Systems: computer systems and networks that support the operation of various departments of the city). As a result of a major leak of the city, you are provided with databases and documents of all their structures (Police and Crime Information: The Arkansas Crime Information Center and the FBI Criminal Justice Information Service system are available information on license plates and driver's licenses, Confidential law enforcement data, such as personally identifiable information (PII), such as Names, addresses, and phone numbers of residents.) More than 100,000 SSNs, reports and police station files with photos from the reports, as well as software used by cyberpolice to work with phone data, as well as reports and dumps of people's phones, and most importantly, their data on the water supply system and a complete database of 911 calls and incidents.

Sources

Source

Indexed 12 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 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 126 public disclosures across our corpus. First observed on a leak site on October 13, 2024; most recent post September 15, 2026. The operation is currently active.

Timeline of this disclosure

  • September 15, 2026City of Fort Smith Arkansas listed by Interlock on the group's public leak site

Other recent disclosures by Interlock

Interlock has been linked to 126 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 Government & Defense sector, which has 5 disclosures indexed across all operators we track. Geographically, City of Fort Smith Arkansas is reported in United States, a country with 3,165 ransomware disclosures in our corpus.

If your organisation is affected

A listing by Interlock means City of Fort Smith Arkansas 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.