Was Sadtek hit by ransomware?

Sadtek was listed by the Qilin ransomware operation (Turkey), 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 Qilin ransomware group?

Qilin 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 Sadtek breach?

Qilin published data attributed to Sadtek. Darkfield captured the leak post and a screenshot of the listing.

Ransomware victim disclosure

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Sadtek Elektronik

listed as Sadtek · Claimed by Qilin · listed 2 months ago

Age

since listed · data leaked

Status timeline

ListedApr 10, 2026
Data leakeddate unknown

At a glance

Group: Qilin
Status: Data leaked
Country: Turkey
Listed on leak site: Apr 10, 2026

About the victim

AI dossier — public-source company profile

Sadtek Elektronik is a Turkish electronics company headquartered in Pendik, Istanbul, with over 20 years of experience providing sales, R&D, and engineering services to the defence, aviation, and marine sectors. The company supplies electrical/electronic spare parts, devices, technical services, and engineering solutions to both public and private organisations, and also operates an R&D office at Istanbul Teknopark. It represents global brands in areas including ground support equipment, marine searchlights, marine electronics, and ADS-B systems.

Industry: Defence, Aviation & Marine Electronics
Address: Kurtköy Mah. Ankara Cad. No:289 Yelken Plaza B Blok Kat:5/25 34912 Pendik/İSTANBUL, Turkey

Attack summary

Severity: critical — Sadtek Elektronik operates in the defence, aviation, and marine sectors, serving both government and military clients, and conducts active R&D in defence industry applications. Any confirmed data exfiltration from such a company carries critical implications due to the likely presence of sensitive government contracts, technical specifications, and defence-related intellectual property.

Qilin claims to have compromised Sadtek Elektronik and lists the disclosure status as 'data_published'; however, the leak post excerpt does not specify the volume of data exfiltrated or provide explicit proof file counts for this victim specifically.

critical

Data the group says was taken

AI dossier — extracted from the leak post

Company files (unspecified)

What the group claims

N/A

The leak post

captured from the group's site

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Sources

Source

Indexed 2 months 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 Qilin

Qilin is a ransomware group that emerged in October 2022, operating with primarily financial motivations through targeted attacks against organizations across multiple sectors. The group appears to operate independently with limited public information available regarding their specific country of origin or affiliations to other ransomware families. Qilin employs double extortion tactics, typically exfiltrating sensitive data before deploying their encryption payload, though specific details about their initial access vectors and technical tools remain less documented in public security research. The group has demonstrated a broad targeting approach, with their 1645 known victims spanning multiple countries including the United States, France, Canada, United Kingdom, and Germany, with particular focus on manufacturing, technology, healthcare, and business services sectors. Based on available intelligence reporting, Qilin remains an active threat as of recent assessments, continuing their ransomware operations without significant reported law enforcement disruption. The group has been linked to 1,935 public disclosures across our corpus. First observed on a leak site on October 8, 2022; most recent post June 12, 2026. The operation is currently active.

Timeline of this disclosure

April 10, 2026Sadtek listed by Qilinon the group's public leak site

Sector and geography

Geographically, Sadtek is reported in Turkey, a country with 7 ransomware disclosures in our corpus.

If your organisation is affected

A listing by Qilin means Sadtek 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 Qilin'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.