CYBERSECURITYTRACKER
Incidents

Kairos

Review this actor's tracked leak-site claims, published reporting, and attributed threat evidence.

ransomware138 leak-site claims, all timeLatest observed leak-site post 2026-10-14

Portable threat brief

Kairos

Facts from stored data only; no AI-written text.

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Executive facts

Actor
Kairos
Kind
ransomware
Actor record created
2026-07-20
Latest observed
2026-10-14
Leak-site claims
138
Catalogued techniques
0

Scope

Tracked sectors
Healthcare, Education, Legal, Manufacturing, Government
Claim records
2024-11-13 to 2026-10-14

Vulnerability events linked to this group

No dated vulnerability events are attached to this group's linked vulnerabilities.

Verified techniques

No verified ATT&CK mapping for this group.

Defensive actions

No defensive actions are attached to this profile.

Most-claimed sectorsHealthcareEducationLegalManufacturingGovernment
Activity window in this site's data

This is only the dates observed by this site. It is not this actor's lifetime or evidence of dormancy outside these dates.

Claim records
First observed Latest observed
Verified ATT&CK phases represented

No verified ATT&CK mapping for this group

Origin and motivation

Origin and motivation not attributed.

No MITRE ATT&CK group mapping exists for this actor yet. Mappings here are strict: an actor links to a MITRE group only when the group's own name, aliases, or MITRE-published description match, and MITRE has not catalogued this group. Technique and defensive action data will appear automatically if a verified mapping lands.

Claims posted under this group's name or leak-site brand
138 on this site
View all on Breaches →
Leak-site claim activity

Claims per month, 2024-11 to 2026-10. Peak 43 in 2025-12.

2024-112026-10
Show monthly counts as a table
MonthClaims
2024-118
2024-126
2025-016
2025-025
2025-034
2025-045
2025-053
2025-066
2025-073
2025-083
2025-094
2025-106
2025-110
2025-1243
2026-010
2026-024
2026-034
2026-048
2026-055
2026-061
2026-075
2026-082
2026-095
2026-102

0 additional claims without a disclosure date

Ransomware claim data is unverified: RansomLook (CC BY 4.0) and ransomware.live (Terms of use: credit and link required).

Glossary