Disclosure context

About stormous

Stormous is a relatively new ransomware group that emerged in March 2022, operating primarily with financial motivations and has claimed responsibility for attacks against at least 165 victims across multiple countries and sectors. The group's country of origin remains unclear from publicly documented sources, though their operational patterns suggest they may operate as an independent entity rather than a established ransomware-as-a-service model. Limited public documentation from major security firms indicates the group employs common ransomware tactics, though specific details about their initial access vectors, encryption methods, and data exfiltration practices have not been extensively detailed in reports from CISA, FBI, or major threat intelligence providers. Their targeting appears geographically diverse with a focus on Spain, the United States, France, UAE, and Brazil, while showing particular interest in technology, hospitality and tourism, government, and business services sectors, though many of their victims span unspecified industries. As of current reporting, Stormous appears to remain an active threat, though the limited public documentation suggests they operate as a lower-tier ransomware group compared to more prominent families that receive extensive coverage from major security research organizations. The group has been linked to 220 public disclosures across our corpus. First observed on a leak site on March 22, 2022; most recent post May 13, 2026. The operation is currently active.

Timeline of this disclosure

May 2, 2026www.kai.id (FF) listed by stormouson the group's public leak site

Sector and geography

This disclosure adds to ransomware activity in the Transportation/Logistics sector, which has 847 disclosures indexed across all operators we track. Geographically, www.kai.id (FF) is reported in ID, a country with 23 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

www.kai.id (FF)

Claimed by stormous · listed 19 days ago

18d

Age

since listed · data leaked

Status timeline

Listed
May 2, 2026
Data leaked

At a glance

Group: stormous
Status: Data leaked
Country: ID
Sector: Transportation/Logistics
Listed on leak site: May 2, 2026

About the victim

AI dossier — public-source company profile

PT Kereta Api Indonesia (KAI) is the state-owned national railway operator of Indonesia, responsible for passenger and freight train services across the country. Operating under the Ministry of State-Owned Enterprises, KAI manages an extensive rail network spanning Java and parts of Sumatra. It is one of Indonesia's largest public transportation entities, serving tens of millions of passengers annually.

Industry: National Railway Transportation
Address: Jl. Perintis Kemerdekaan No.1, Bandung, West Java 40117, Indonesia
Employees: 10000+
Founded: 1945

Attack summary

Severity: high — The target is a national critical infrastructure operator (state-owned railway) and data has been marked as published, indicating confirmed exfiltration; the scale and sensitivity of data held by a national rail operator (passenger PII, operational data) elevates this beyond medium, though specific data categories are unconfirmed.

The Stormous ransomware group claims to have compromised PT Kereta Api Indonesia and has published data (disclosed status: data_published), though no specific data size or ransom demand was stated in the post.

high

Data the group says was taken

AI dossier — extracted from the leak post

Unspecified internal company data

What the group claims

PT Kereta Api Indonesia is the national railway company in Indonesia, also known as Kereta Api. It is responsible for operating train services throughout the country.

Sources

Victim sitekai.id

Source

Indexed 19 days 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.