Was ratnasagar.com hit by ransomware?

ratnasagar.com was listed by the J ransomware operation (India), and stolen data was published on the group's leak site. Darkfield tracks this disclosure with the original leak post, screenshot and group context.

Who is the J ransomware group?

J is a ransomware operator tracked by Darkfield. See the full operator dossier for its known victims, sectors targeted, IOCs and leak-site infrastructure.

What data was leaked in the ratnasagar.com breach?

J published data attributed to ratnasagar.com. Darkfield captured the leak post and a screenshot of the listing.

Ransomware victim disclosure

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Ratna Sagar Private Limited

listed as ratnasagar.com · Claimed by J · listed 1 year ago

14m

Age

since listed · data leaked

Status timeline

ListedMay 12, 2025
Data leakeddate unknown

At a glance

Group: J
Status: Data leaked
Country: India
Sector: Education
Listed on leak site: May 12, 2025

About the victim

AI dossier — public-source company profile

Ratna Sagar Private Limited is an ISO 9001:2015 and 14001:2015 certified educational publishing company based in Delhi, India, with over three decades of experience. They specialize in textbooks and educational materials for kindergarten through grade 12, including English literacy, social science, science, mathematics, and related subjects used across thousands of schools in India.

Industry: Educational Publishing
Address: Delhi, India
Founded: 1986

Attack summary

Severity: medium — Data has been published by the group; however, the leak post excerpt does not specify the nature, volume, or sensitivity of exfiltrated data. No operational disruption is stated. Educational publishing data alone is moderate sensitivity without confirmed PII at scale.

Group J claims to have conducted an attack on Ratna Sagar resulting in data exfiltration. The specific data compromised and operational details are not detailed in the available post excerpt.

medium

Data the group says was taken

AI dossier — extracted from the leak post

Educational content materials
Student/school records
Business operations data

Original description

AI-summarised, not from the leak post

Ratna Sagar is an educational publishing company based in India with over three decades of experience. They specialize in textbooks for kindergarten to grade 12, with a major focus on English literacy materials. The company's comprehensive resources cover a wide range of subjects and are used in thousands of schools across India.

Sources

Source

Indexed 1 year 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.

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Disclosure context

About J

The J ransomware group is a newly emerged threat actor first observed in May 2025, operating with apparent financial motivations based on their targeting patterns across multiple countries and sectors. With limited public documentation available from established security research organizations, the group has demonstrated rapid operational capability by compromising 41 known victims within their initial months of activity. Their targeting strategy appears opportunistic, focusing primarily on organizations in the United States, United Kingdom, France, Argentina, and Germany, with a particular emphasis on technology companies, manufacturing firms, construction businesses, and business services providers. The diversity of their geographic and sectoral targeting suggests either a broad-spectrum approach to victim selection or potential use of automated tools for initial compromise identification. Given the recent emergence of this group and limited reporting from major cybersecurity firms and law enforcement agencies, specific details regarding their technical methodologies, ransom demands, data exfiltration practices, or organizational structure remain undocumented in publicly available threat intelligence. The group remains active as of current reporting periods, though their relative obscurity in established threat intelligence databases suggests they may be operating at a smaller scale compared to more prominent ransomware-as-a-service operations. The group has been linked to 41 public disclosures across our corpus. First observed on a leak site on May 2, 2025; most recent post November 9, 2025. The operation is currently inactive.

Timeline of this disclosure

May 12, 2025ratnasagar.com listed by Jon the group's public leak site

Other recent disclosures by J

J has been linked to 41 public victims on Darkfield. A sample of the most recent:

See the full J dossier →

Sector and geography

This disclosure adds to ransomware activity in the Education sector, which has 1,082 disclosures indexed across all operators we track. Geographically, ratnasagar.com is reported in India, a country with 381 ransomware disclosures in our corpus.

If your organisation is affected

A listing by J means ratnasagar.com appeared on a ransomware extortion site and data attributed to it has been published. If this is your organisation, or a supplier you depend on, the priority is to confirm the intrusion and contain it before the window to act closes.

Engage your incident-response team and preserve forensic evidence before remediating — do not wipe affected systems first.
Force a password reset and revoke active sessions for exposed accounts; rotate any credentials, API keys or certificates that may have been in the stolen data.
Assess regulatory notification duties (GDPR, NIS2, sector regulators) — many carry a 72-hour reporting clock from awareness.
Report the incident to your national CERT, CERT-In (India), as required for your jurisdiction.
Monitor for the data appearing on J's leak site and across paste and breach channels, and brief downstream partners who may be exposed through you.

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.