Kairos Ransomware

Kairos is a ransomware threat group that has disclosed 86 victims in publicly accessible leak site data, representing 0.5% of all ransomware attacks tracked in this database. The earliest victim disclosure attributed to Kairos in our dataset dates to May 2026.

Geographically, Kairos has targeted organisations in 14 countries. The most frequently targeted nation is United States with 51 victim organisations. Other heavily targeted nations include Australia, United Kingdom, Canada.

Industry-wise, Kairos shows a concentration in the Construction, Public Sector, Business Services sectors. These industries are frequently targeted because they manage sensitive data, critical operations, or have lower tolerance for operational downtime — conditions that increase ransom payment likelihood.

Like most modern ransomware operations, Kairos likely employs a double extortion model: encrypting victim files while simultaneously exfiltrating data, creating dual pressure to pay the ransom. Victim organisations that refuse payment face having their data published on the group's dark web leak site.

Note: This profile is generated from public leak site disclosures aggregated via the ransomware.live API. Data is updated automatically. The victim table below shows the 4 most recent cached victims; the total victim count (86) reflects the complete database.