Skip to main content
Darkfield

Ransomware victim disclosure

← All victims

MEFA Group

listed as Mefa Group www.mefagroup.com.tr / MEFA Endüstri www.mefaendustri.com / and (Efachem, Eco... · Claimed by Blacknevas · listed 5 days ago

5d
Age
since listed · data leaked

Status timeline

  1. ListedSep 8, 2026
  2. Data leakeddate unknown

At a glance

Group
Blacknevas
Status
Data leaked
Country
Turkey
Sector
Manufacturing
Listed on leak site
Sep 8, 2026

About the victim

AI dossier — public-source company profile

MEFA Group is a Turkish industrial conglomerate headquartered in Ankara, founded in 2006. Operating across multiple divisions—MEFA Endüstri (industrial products), Efachem (plastic/rubber compounds), Ecopolymer (waste-to-material recycling), and Milkrun Lojistik (logistics)—it serves automotive and white goods sectors with over 115,000 m² of production space and 2,000+ employees across Turkey, Poland, and Romania.

Industry
Industrial Manufacturing, Plastics & Rubber Compounds, Recycling, Logistics
Address
Ankara, Turkey (headquarters); additional facilities in Eskişehir, Cerkezköy, Bolu, Poland, and Romania
Employees
2000+
Founded
2006

Attack summary

Severity: medium — Data published status is confirmed, but the leak post provides no proof files, screenshots, or specific inventory of exfiltrated data. No ransom demand or operational disruption is stated. Classification reflects the confirmed disclosure without clarity on data scope or sensitivity.

BlackNevas claims to have compromised MEFA Group and its subsidiary companies. The post does not specify whether encryption, exfiltration, or both occurred, nor does it detail what data was accessed or threatened.

medium

What the group claims

https://send.exploit.in/#37608d72633301fc62801dfdf9111dbe!BsYvGiQz6WmjZo1VvPwTi8lU2K7prrPY2q6CdMORZn0List of files. For details and cooperation, write to Telegram https://t.me/BlackNevas or email [email protected] Group is a Turkish industrial group (headquartered in Ankara), founded in 2006. It operates in industrial manufacturing, plastics, rubber, processing, and logistics. The group has over 115,000 m² of production space, over 2,000 employees, and several facilities in Turkey, Romania, and Poland. Its main areas of focus are the automotive industry, white goods, and related industries.MILKRUN — Milkrun Lojistik, the group's logistics division. It provides integrated and smart logistics solutions for group companies and partners (focusing on efficiency, digitalization, and sustainability). It is not the Australian grocery delivery service of a similar name.Efachem, a division specializing in plastic and rubber compounds (compound solutions), develops customized formulas to meet customer needs, ensuring compatibility with production processes and consistent quality.Ecopolymer, a division specializing in raw materials processing and technology, utilizes cutting-edge recycling technologies, converting plastic waste into high-performance raw materials within the framework of a circular economy.All these companies operate as a single ecosystem: production (MEFA Endüstri), raw materials/compounds (Efachem), processing (Ecopolymer), and logistics (Milkrun).

Sources

Source

Indexed 5 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.

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 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 48 public disclosures across our corpus. First observed on a leak site on August 6, 2025; most recent post September 8, 2026. The operation is currently active.

Also tracked as: black nevas.

Timeline of this disclosure

  • September 8, 2026Mefa Group www.mefagroup.com.tr / MEFA Endüstri www.mefaendustri.com / and (Efachem, Eco... listed by blacknevas on the group's public leak site

Other recent disclosures by blacknevas

blacknevas has been linked to 48 public victims on Darkfield. A sample of the most recent:

See the full blacknevas dossier →

Sector and geography

This disclosure adds to ransomware activity in the Manufacturing sector, which has 3,696 disclosures indexed across all operators we track. Geographically, Mefa Group www.mefagroup.com.tr / MEFA Endüstri www.mefaendustri.com / and (Efachem, Eco... is reported in Turkey, a country with 31 ransomware disclosures in our corpus.

If your organisation is affected

A listing by blacknevas means Mefa Group www.mefagroup.com.tr / MEFA Endüstri www.mefaendustri.com / and (Efachem, Eco... 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.
  • Monitor for the data appearing on blacknevas'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.