Ransomware group profile · #55 by claimed victims

Interlock ransomware

Interlock is a ransomware group first observed in September 2024 that targets critical infrastructure sectors including healthcare, government, education, and technology across North America and Europe using double-extortion, with 57+ claimed victims including a major US dialysis provider exposing over two million patient records.

Active First seen Oct 2024

128Victims claimed on leak sites

7Victims in the last 30 days

18Victims in the last 90 days

8Countries hit

182Leak-site URLs tracked, 13 online

15 Sep 2026Latest claim recorded

Victimology

Who Interlock claims to have breached, from 128 leak-site posts recorded by VULONE.

Claims per month last 12 months

Top sectors

Education31

Manufacturing20

Professional Services18

Government & Defense17

Healthcare14

Retail & E-Commerce7

Financial Services5

Hospitality4

Top countries

United States96

Canada9

United Kingdom7

Australia6

Italy2

Ireland1

Poland1

Mexico1

Latest claimed victims 12 most recent

Victim	Sector	Country	Claimed
Springfield Public Schools	—	—	15 Sep 2026
Springfield Public Schools springfieldpublicschools.com	Education	US	15 Sep 2026
City of Fort Smith Arkansas	—	—	15 Sep 2026
City of Fort Smith Arkansas fortsmithar.gov	Government & Defense	US	15 Sep 2026
NFM Lending	Financial Services	US	7 Sep 2026
Super Systems Inc supersystems.com	Technology	US	31 Aug 2026
Southeastern Oklahoma State University se.edu	Education	US	19 Aug 2026
Connell Enterprises LLC connellenterprisesinc.com	Other	US	14 Aug 2026
AngMar Companies angmarcompanies.com	Not Found	—	11 Aug 2026
Gardiner Family Chiropractic gardinerfamilychiropractic.com	Healthcare	US	31 Jul 2026
Centre for Newcomers centrefornewcomers.ca	Government & Defense	CA	17 Jul 2026
Paragon Store Fixtures paragonstorefixtures.com	Manufacturing	US	17 Jul 2026

All 128 Interlock victims, searchable

Full victim list with claim posts, domains, timing and exports, plus the negotiation chats and leak-site screenshots VULONE archives for this crew.

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Tactics, techniques and procedures

ATT&CK technique mapping for Interlock is in progress. Victimology, infrastructure status and leak-site tracking are live above.

Indicators, detections and the full playbook

Hashes, C2 addresses, onion services, Sigma and YARA detections per technique, and the negotiation transcripts are available to signed-in analysts.

See full IOCs

Frequently asked

Is Interlock ransomware still active?

Interlock is tracked as active. The most recent leak-site claim VULONE recorded is dated 15 September 2026. 7 victims were claimed in the last 30 days.

How many victims has Interlock claimed?

VULONE has recorded 128 leak-site victim claims attributed to Interlock since October 2024, across 8 countries and 13 sectors.

Which industries does Interlock target?

The sectors most often named on the Interlock leak site are Education, Manufacturing, Professional Services.

Which countries are most affected by Interlock?

Most Interlock victims recorded by VULONE are located in United States, Canada, United Kingdom.

Where does VULONE get Interlock victim data?

Claims are collected continuously from the group's own leak sites and cross-checked with ransomware.live and RansomLook. A claim is the group's assertion, not a confirmed breach.

Other ransomware groups

Victim claims are collected from leak sites and enrichment partners (ransomware.live, RansomLook) and represent the group's own assertions, not confirmed breaches. Profile last updated 16 September 2026. Questions or corrections: [email protected].