Disclosure context

About Kairos

Kairos is a recently emerged ransomware group first observed in November 2024 that appears to be primarily financially motivated, having targeted approximately 75 victims across multiple sectors and countries. The group's origin and potential affiliations remain unclear due to limited public documentation from established threat intelligence sources, and it is unknown whether they operate as a Ransomware-as-a-Service model or as an independent entity. Based on available targeting data, Kairos appears to focus their operations primarily on English-speaking countries including the United States, Australia, United Kingdom, and Canada, with additional activity observed in Germany, while their sector targeting spans education, healthcare, agriculture and food production, and business services, though specific attack methodologies, initial access vectors, and encryption techniques have not been publicly documented by major security organizations. Given the group's recent emergence in late 2024, there are no widely reported notable campaigns or high-profile incidents documented by CISA, FBI, or established security research firms. As of current reporting, Kairos appears to remain active based on their recent first observation date, though comprehensive threat intelligence profiles from major security organizations have not yet been published due to the group's nascent operational timeline. The group has been linked to 86 public disclosures across our corpus. First observed on a leak site on November 13, 2024; most recent post May 15, 2026. The operation is currently active.

Timeline of this disclosure

February 13, 2026The Marena Group listed by Kairoson the group's public leak site

Sector and geography

This disclosure adds to ransomware activity in the Healthcare sector, which has 1,779 disclosures indexed across all operators we track. Geographically, The Marena Group is reported in United States, a country with 7,392 ransomware disclosures in our corpus.

How we know this. Darkfield monitors public ransomware leak sites continuously, archiving every new disclosure and the data later released against the victim. Each entry on this page is sourced from the operator's own publication and cross-checked against complementary OSINT feeds (RansomLook, ransomware.live, RansomWatch). We do not collect or host stolen data — only the metadata, timestamps and screenshots needed to make the public disclosure searchable and accountable. Records here are corrected when the original post is edited, retracted, or merged with another disclosure.

Ransomware victim disclosure

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The Marena Group

Claimed by Kairos · listed 3 months ago

Age

since listed · data leaked

Status timeline

Listed
Feb 13, 2026
Data leaked

At a glance

Group: Kairos
Status: Data leaked
Country: United States
Sector: Healthcare
Listed on leak site: Feb 13, 2026

About the victim

AI dossier — public-source company profile

The Marena Group is a U.S.-based manufacturer specializing in medical-grade compression garments, with approximately 30 years of operation. The company focuses on research, innovation, design, and manufacturing of compression products aimed at post-surgical recovery and long-term wellness. Its products are intended for patients globally, supporting healing and recovery.

Industry: Medical-Grade Compression Garments Manufacturing
Founded: 1994

Attack summary

Severity: high — SQL databases from a healthcare-adjacent medical device/garment manufacturer are likely to contain patient records, order/medical histories, and potentially regulated PII or PHI, and the data has been confirmed published rather than merely announced.

The Kairos ransomware group claims to have exfiltrated data from The Marena Group, specifically publishing a set of SQL databases. The disclosure status indicates the data has been published.

high

Data the group says was taken

AI dossier — extracted from the leak post

SQL databases

What the group claims

Contains a set of SQL databases For the past 30 years, Marena has been dedicated to advancing the effective use of medical-grade compression through research, innovation, design, and manufacturing of garments for long-term wellness benefits. Our mission is to help patients around the world heal in comfort, recover with confidence, and live better.

Source

Indexed 3 months ago

This page surfaces a public ransomware disclosure indexed by Darkfield. Original posts come from the operator's own leak site; we cross-check against ransomware.live, RansomLook and RansomWatch where applicable. Share this URL freely.