The City of Fort Smith, Arkansas, US, was compromised by threat actor interlock, leading to a major ransomware-related leak of 5.6 TB of confidential data, including public safety (police, fire, and 911 communications), water and sewer infrastructure, and city information systems. Exposed data included sensitive law enforcement records and PII (including over 100,000 SSNs), along with extensive datasets covering phone records and 911 calls/incidents that support critical public services. #UnitedStates
Incident Details
- Victim: City of Fort Smith Arkansas
- Sector: Government & Defense
- Country: US
- Actor: interlock
- Source: http://dcwatuq6kzwj5i2sx7f2cx5hud2ryo3cnm6n6j2r6am57qskfqvdpeqd.onion/index.php?p=
- Discovered: 2026-09-15T15:31:16.639907+00:00
- Published: 2026-09-15T15:30:58.040290+00:00
Information
- The city’s systems were compromised in a ransomware attack by Interlock.
- Over 5.6 TB of confidential data was reportedly leaked.
- The leak includes critical infrastructure information, such as police, fire, communications, and 911 dispatch operations.
- Water and sewer treatment system data was also exposed.
- Internal city IT systems and network-related documents were part of the breach.
- Law enforcement databases and criminal justice information were allegedly accessed.
- The exposed materials include sensitive resident information, such as names, addresses, and phone numbers.
- More than 100,000 Social Security numbers were reportedly included in the leak.
- Police reports, case files, and report photos were exposed.
- Software used by cyber police to analyze phone data was also leaked.
- Phone data dumps and related investigative materials were included.
- Complete databases of 911 calls and incidents were reportedly compromised.
Disclaimer: This post is based on public claims made by the ransomware group "interlock". I cannot confirm the accuracy of the information. However, I would be happy to share any official statement from the affected organization to provide clarification.