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

October 20, 2025ocbar.org/USA/114GB listed by Kairoson the group's public leak site

Sector and geography

This disclosure adds to ransomware activity in the Not Found sector, which has 4,859 disclosures indexed across all operators we track. Geographically, ocbar.org/USA/114GB 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

← All victims

Orange County Bar Association

listed as ocbar.org/USA/114GB · Claimed by Kairos · listed 7 months ago

Age

since listed · data leaked

Status timeline

Listed
Oct 20, 2025
Data leaked

At a glance

Group: Kairos
Status: Data leaked
Country: United States
Sector: Not Found
Listed on leak site: Oct 20, 2025

About the victim

AI dossier — public-source company profile

The Orange County Bar Association (OCBA) is a professional membership organization serving attorneys and legal professionals in Orange County, USA. It provides resources, continuing legal education, networking, and advocacy for the legal community in its region. As a bar association, it likely maintains membership records, legal proceedings data, and professional credentials for attorneys.

Industry: Legal Professional Association

Attack summary

Severity: high — A bar association holds sensitive PII for potentially thousands of legal professionals including bar membership data, contact details, financial records, and possibly confidential legal communications. 114GB of published data represents significant exfiltration of professional and personal data at scale.

The Kairos ransomware group claims to have exfiltrated data from the Orange County Bar Association, with the leak post indicating data has been published. The victim entry references 114GB of data associated with the organization.

high

Data the group says was taken

AI dossier — extracted from the leak post

Attorney membership records
Personal identifiable information (PII)
Legal proceedings data
Professional credentials
Financial/billing records
Internal communications

What the group claims

Unknown - Orange County Bar Association

Sources

Source

Indexed 7 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.