Disclosure context

About cephalus

Based on available public information, Cephalus is a recently emerged ransomware group first observed in August 2025, operating with apparent financial motivations targeting organizations primarily across the United States, United Kingdom, Netherlands, and Ireland. The group has claimed 19 victims since emergence, with no publicly documented country of origin or confirmed affiliations to established ransomware families or RaaS operations by major security researchers or government agencies. Their attack methodology and specific technical capabilities remain largely undocumented in public threat intelligence reporting, though their targeting pattern shows focus on healthcare, business services, financial services, and manufacturing sectors alongside organizations of undetermined industry classification. No major high-profile campaigns, record ransom demands, or law enforcement disruption actions have been publicly reported by CISA, FBI, or established security research firms at this time. The group appears to remain active as of current reporting, though the limited public documentation suggests either highly targeted operations or insufficient analysis coverage by major threat intelligence organizations. The group has been linked to 19 public disclosures across our corpus. First observed on a leak site on August 26, 2025; most recent post August 29, 2025. The operation is currently inactive.

Timeline of this disclosure

August 26, 2025K Strategies Marketing and Public Relations listed by cephaluson the group's public leak site

Sector and geography

This disclosure adds to ransomware activity in the Business Services sector, which has 2,640 disclosures indexed across all operators we track. Geographically, K Strategies Marketing and Public Relations 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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K Strategies Marketing and Public Relations

Claimed by cephalus · listed 9 months ago

Age

since listed · data leaked

Status timeline

Listed
Aug 26, 2025
Data leaked

At a glance

Group: cephalus
Status: Data leaked
Country: United States
Sector: Business Services
Listed on leak site: Aug 26, 2025

About the victim

AI dossier — public-source company profile

K Strategies is an award-winning marketing and public relations agency founded in 2002 and based in Dallas, Texas. Led by CEO Katrina Keyes, who was recognized as one of the 18 most admired CEOs in Dallas, the firm delivers marketing solutions and PR services across 100+ projects. The agency has received 50+ awards for its creative and strategic client work.

Industry: Marketing & Public Relations
Address: Dallas, Texas, United States
Employees: 11-50
Founded: 2002

Attack summary

Severity: high — 900+ GB of data has been confirmed exfiltrated and published, representing a significant volume of business data from a marketing and PR firm that likely holds sensitive client information, campaign data, and potentially personal data of clients and employees.

The ransomware group Cephalus claims to have exfiltrated over 900 GB of data from K Strategies Marketing and Public Relations, with the data now published as a leak. No ransom amount was stated and the disclosure status is marked as data published.

high

Data the group says was taken

AI dossier — extracted from the leak post

Client marketing files
Public relations materials
Internal business documents
Potentially employee/client PII

What the group claims

K Strategies Marketing and Public Relations LEAK | 900+GB

Sources

Victim sitekstrategies.com
Leak posthttps://darkforums.st/Thread-Document-K-Strategies-Marketing-and-Public-Relations-LEAK-900-GB

Source

Indexed 9 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.