Skip to main content
Darkfield

Ransomware victim disclosure

← All victims

Naftor Sp. z o.o.

listed as Naftor and Grupa Pern (Naftoport/ SIARKOPOL/ SARMATIA/ NAFTOSERWIS) is the most dangerous · Claimed by Alphv · listed 3 years ago

32m
Age
since listed · data leaked

Status timeline

  1. ListedNov 14, 2023
  2. Data leakeddate unknown

At a glance

Group
Alphv
Status
Data leaked
Country
Poland
Sector
Energy
Listed on leak site
Nov 14, 2023

About the victim

AI dossier — public-source company profile

Naftor Sp. z o.o. is a subsidiary of PERN S.A. operating in Poland, specializing in physical security and technical protection of critical infrastructure objects of state economic importance. The company also provides specialized training and security projects for government institutions and commercial clients.

Industry
Physical Security & Technical Protection Services
Address
ul. Wał Miedzeszyński 630, 03-994 Warszawa, Poland

Attack summary

Severity: high — Confirmed data exfiltration from a critical infrastructure security company with alleged compromise of partner/client networks. Threat actors claim access to sensitive documents and warn of secondary breaches. Company works with government institutions, elevating sensitivity.

ALPHV claims to have exfiltrated confidential documents from Naftor and Grupa Pern. The group threatens to publish all data and warns that the companies' network vulnerabilities have been used to compromise partner and client networks.

high

Data the group says was taken

AI dossier — extracted from the leak post
  • confidential business documents
  • partner/client data
  • internal communications

What the group claims

WARNING! COOPERATION WITH NAFTOR AND GRUPA PERN MAY RESULT IN THE LEAKAGE OF YOUR DATA. THESE COMPANIES DO NOT COMPLY WITH THE LAWS OF THE EUROPEAN UNION AND IN PARTICULAR THE GDPR. YOU MAY INCUR LEGAL AND FINANCIAL RISKS BY WORKING WITH THEM! WE RECOMMEND ALL CLIENTS AND PARTNERS OF GRUPA PERN TO URGENTLY TERMINATE THEIR CONTRACTS AS ALL CONFIDENTIAL DOCUMENTS WILL BE MADE PUBLIC IN THE NEAR FUTURE. THE COMPANY'S VULNERABILITIES HAVE ALREADY BEEN USED TO PENETRATE THE NETWORKS OF PARTNERS AND CLIENTS. ANY CONTACTS WITH THESE ORGANIZATIONS CAN DESTROY YOUR BUSINESS! About Naftor Sp. z o.o. is a PERN S.A. Group company operating in the broadly defined area of security prepared to carry out projects in the field of physical security and technical protection of objects of particular importance for the economic interest of the state as well as conducting specialized training and special projects for government institutions and selected commercial entities. ul. Wał Miedzeszyński 630 03-994 Warszawa tel./fax 22 487 57 87 naftor.pl

Sources

Source

Indexed 3 years 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.

Is this your supplier? Your competitor? You?

Pro plans monitor your domain, corporate emails, and crypto wallets across every new ransomware leak-site post, breach dump and Telegram callout — alerts within 5 minutes.

Disclosure context

About alphv

ALPHV, also known as BlackCat or Noberus, is a financially motivated ransomware group that emerged in September 2021 and rapidly established itself as one of the most sophisticated and prolific ransomware operations observed by researchers at Mandiant, CISA, and the FBI. The group is suspected to have Russian-speaking origins and operates as a Ransomware-as-a-Service (RaaS) platform, with well-documented links to former affiliates of the DarkSide and BlackMatter ransomware operations, suggesting a continuity of personnel and tradecraft across these successive rebrand events. ALPHV is technically distinguished by its use of Rust-based ransomware — an uncommon choice at the time of its emergence — which enabled cross-platform attacks against Windows, Linux, and VMware ESXi environments; the group employs multiple initial access vectors including compromised credentials, phishing, and exploitation of unpatched vulnerabilities, and routinely conducts double and triple extortion by exfiltrating sensitive data prior to encryption and threatening victims with public disclosure on their dedicated leak site, with some cases involving additional pressure through direct contact with victim customers and regulators. ALPHV has claimed responsibility for high-profile attacks against MGM Resorts International, Caesars Entertainment, Reddit, and healthcare provider Change Healthcare — the latter representing one of the most disruptive cyberattacks on the U.S. healthcare sector on record, with a reported ransom payment of approximately $22 million — and has accumulated over 731 known victims across the United States, Canada, Australia, the United Kingdom, and Germany, with particular concentration in business services, manufacturing, healthcare, technology, and financial services sectors. In December 2023, the FBI and international partners conducted a disruption operation against ALPHV's infrastructure and released a decryption tool for victims; however, the group subsequently attempted to rebrand and continued operations before an apparent final collapse in March 2024, following an alleged exit scam against affiliates after the Change Healthcare ransom payment, with law enforcement officially attributing the group's infrastructure seizure shortly thereafter. The group has been linked to 731 public disclosures across our corpus. First observed on a leak site on September 9, 2021; most recent post March 3, 2024. The operation is currently inactive.

Also tracked as: BlackCat, Noberus.

Timeline of this disclosure

  • November 14, 2023Naftor and Grupa Pern (Naftoport/ SIARKOPOL/ SARMATIA/ NAFTOSERWIS) is the most dangerous listed by alphvon the group's public leak site

Other recent disclosures by alphv

alphv has been linked to 731 public victims on Darkfield. A sample of the most recent:

See the full alphv dossier →

Sector and geography

This disclosure adds to ransomware activity in the Energy sector, which has 652 disclosures indexed across all operators we track. Geographically, Naftor and Grupa Pern (Naftoport/ SIARKOPOL/ SARMATIA/ NAFTOSERWIS) is the most dangerous is reported in Poland, a country with 21 ransomware disclosures in our corpus.

If your organisation is affected

A listing by alphv means Naftor and Grupa Pern (Naftoport/ SIARKOPOL/ SARMATIA/ NAFTOSERWIS) is the most dangerous 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 Polska (Poland), as required for your jurisdiction.
  • Monitor for the data appearing on alphv'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.