Home All Victims Unknown

Unknown

tengu

This record tracks a ransomware attack claimed by the tengu group against Unknown. It collects the publicly disclosed attack details — sector, location and timeline — as published on the operator's leak site and indexed by Breach House.

Window Zero

EXPOSURE GAP

Window Zero is the time the breach stayed in the open before anyone said so — the gap between when the attack was first discovered on the operator's leak site (t1) and when it was publicly disclosed (t2). The wider this window, the longer victims, staff and customers were exposed with no warning.

-71days
t1 · Published t2 · Disclosed
Dec 12, 2025Oct 03, 2025
Country
Business Category
Other
Employees
51-100
Discovered
2025-12-12
Published
December 12, 2025
Disclosed / Notified
Oct 03, 2025
Victim ID
YF7wuXzxKKvE

Attack Summary

Unknown is an organization in the Other sector, but the available records do not provide enough verified public detail to confirm its exact location, products, or services. In threat-intelligence indexing, such entries are used when a victim is named but the company itself remains insufficiently identified in open sources. Tengu is a ransomware operation that targets organizations across multiple sectors and regions using double-extortion tactics. Unknown was listed as a ransomware victim associated with tengu.

Leak Screenshots

SAMPLE

Proof-of-breach screenshots the operator posted from the stolen data. Previews are redacted and locked — the originals are available on HaveIBeenRansom.

file_tree.png
finance_2024.xlsx
passport_scan.jpg
contract_signed.pdf
Sign in or explore HaveIBeenRansom to view the full leak gallery.
View leak gallery →

Dark Web Exposure

Cross-referenced against HaveIBeenRansom's dark-web index of ransomware leaks, breaches & infostealer logs.
0
found in Infostealer logs
0
found in Traditional breaches
0
found in Ransomware leaks
Emails exposed
••••
Internal
•••
External
•••
Distinct leaks
••
••••••••••••••••••••••••
•••••••••• · ••••••
••• emails
••••••••••••••••••••••••
•••••••••• · ••••••
••• emails
••••••••••••••••••••••••
•••••••••• · ••••••
••• emails
••••••••••••••••••••••••
•••••••••• · ••••••
••• emails
Full exposure is locked
See every breached email, the internal-vs-external split and each leak source behind this victim.
Want the complete picture — passwords, machines, full leak files? It's all searchable on HaveIBeenRansom.
Search this victim →
Original Post View Group: tengu
Legal Disclaimer: This ransomware victim record reflects information published on the operator's leak site. Breach.house does not acquire, download, host, access or redistribute unlawfully obtained data. It indexes only publicly visible information posted by ransomware, breach and infostealer operators and open web sources, without accessing the underlying stolen content. The service supports public awareness, legitimate research and cyber-resilience.