Overview
Kairos is a data extortion group active since late 2024 that focuses solely on data theft with no encryption, primarily targeting small-to-mid-sized organizations in healthcare, manufacturing, and business services in the US, purchasing initial access from brokers and demanding Bitcoin payments.
- First tracked: 2024-11-13
- Discussed in our reports: France
Geography: origin and targets
No public attribution of origin. Lines are drawn only where public reporting places the operators; flags show where the group has claimed victims, sized by number of claims.
United States of America57
Australia13
United Kingdom7
France4
Canada4
Germany3
Spain2
Denmark2
Slovakia2
New Zealand1
Exploited vulnerabilities
None recorded in the sources we reviewed.
ATT&CK techniques
None recorded in the sources we reviewed.
Tools
None recorded in the sources we reviewed.
Leak-site infrastructure
| Title | Type | Address (defanged) | Seen online at snapshot |
|---|---|---|---|
| SBU | DLS | nerqnacjmdy3obvevyol7qhazkwkv57dwqvye5v46k5bcujtfa6sduad[.]onion | No |
| Kairos | DLS | kairosgeuzkzz3ajntqcyxl3ib36szz3mg62mb3zbui33pbk3uzo4qqd[.]onion | Yes |
| — | DLS | erqnacjmdy3obvevyol7qhazkwkv57dwqvye5v46k5bcujtfa6sduad[.]onion | No |
Sources and caveats
Group descriptions, ATT&CK mappings, tools and leak-site locations come from public ransomware tracking projects, including ransomware.live and Crocodyli. Exploited vulnerabilities come from the Ransomware-Vulnerability-Matrix by BushidoUK (licensed CC BY 4.0), supplemented where a group profile there is newer than the data we hold. Each CVE links to its original research source. Technical text is shown in English as published. Leak-site addresses are defanged and shown for blocking and detection; do not visit them. Nothing here is verified by ClairSec_ against a specific incident.
Data snapshot: 2026-10-11