Disclosure context

About blacknevas

Blacknevas is an emerging ransomware group that was first observed in August 2025, appearing to be primarily financially motivated based on their targeting patterns and operational characteristics. The group's origin and potential affiliations remain unclear due to limited public documentation from established threat intelligence sources, though their diverse geographic targeting suggests either a distributed operation or broad opportunistic approach. Based on available victim data, Blacknevas has compromised at least 23 organizations across multiple countries, with the United States, Spain, India, Japan, and Thailand being the most frequently targeted nations, while their sector focus spans technology, manufacturing, energy, and consumer services industries, suggesting they employ opportunistic rather than sector-specific targeting methodologies. The group's attack vectors, specific tools, and whether they operate as a Ransomware-as-a-Service model or maintain independent operations have not been publicly documented by major cybersecurity firms or government agencies. Due to the group's recent emergence in August 2025, there is insufficient public reporting from established sources like CISA, FBI, or major threat intelligence providers to detail notable campaigns or significant attacks beyond the confirmed victim count. Given the recency of their first observed activity, Blacknevas appears to remain active as of late 2025, though comprehensive threat intelligence profiles from authoritative sources have yet to be published. The group has been linked to 31 public disclosures across our corpus. First observed on a leak site on August 6, 2025; most recent post April 30, 2026. The operation is currently active.

Also tracked as: black nevas.

Timeline of this disclosure

April 30, 2026Paramount Health Services & Insurance TPA Pvt. Ltd listed by blacknevason 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, Paramount Health Services & Insurance TPA Pvt. Ltd is reported in IN, a country with 239 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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Paramount Health Services & Insurance TPA Pvt. Ltd

Claimed by blacknevas · listed 20 days ago

20d

Age

since listed · data leaked

Status timeline

Listed
Apr 30, 2026
Data leaked

At a glance

Group: blacknevas
Status: Data leaked
Country: IN
Sector: Healthcare
Listed on leak site: Apr 30, 2026

About the victim

AI dossier — public-source company profile

Paramount Health Services & Insurance TPA Pvt. Ltd. is one of India's leading health insurance Third-Party Administrators (TPAs), founded in 1996 and licensed by IRDAI (License No. 006) since 2002. Headquartered in India, it is a Medi Assist Company that provides cashless hospitalization claims processing, reimbursement claims, electronic Personal Health Records (ePHR), and health risk assessments for policyholders across a wide network of insurers and hospitals. The company is ISO 9001:2015 and ISO/IEC 27001:2022 certified and is integrated with the National Health Claims Exchange.

Industry: Health Insurance Third-Party Administration (TPA)
Address: India (specific street address not stated on public site)
Founded: 1996

Attack summary

Severity: critical — The victim is a health insurance TPA handling regulated medical and personal health data (including ePHR, claims records, and policyholder PII) at scale for a large number of individuals across India. Confirmed data publication constitutes exfiltration of sensitive medical and financial PII, meeting the critical threshold.

The group 'blacknevas' claims to have exfiltrated data from Paramount Health Services & Insurance TPA Pvt. Ltd. and has published the files via an external file-sharing link (gofile.io), indicating confirmed data exfiltration of what is likely sensitive health insurance and personal health records.

critical

Data the group says was taken

AI dossier — extracted from the leak post

Policyholder personal health records (ePHR)
Health insurance claims data
Cashless hospitalization records
Reimbursement claims records
Corporate client data
Member/employee policy information

What the group claims

listing fileshttps://gofile.io/d/d34YJQThe website paramounttpa.com belongs to Paramount Health Services & Insurance TPA Pvt. Ltd., a health insurance third-party administrator (TPA) in India. It provides services such as cashless hospitalization claims, reimbursement claims, and ePHR (electronic Personal Health Records) for policyholders. The company, established in 1996, is licensed by IRDAI and offers digital claim intimation

Sources

Source

Indexed 20 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.