Was Daechang Solution hit by ransomware?

Daechang Solution was listed by the Black X ransomware operation (South Korea), 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 Black X ransomware group?

Black X 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 Daechang Solution breach?

Black X published data attributed to Daechang Solution. Darkfield captured the leak post and a screenshot of the listing.

Ransomware victim disclosure

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Daechang Solution

Claimed by Black X · listed 5 hours ago

Today

Age

since listed · data leaked

Status timeline

ListedJun 13, 2026
Data leakeddate unknown

At a glance

Group: Black X
Status: Data leaked
Country: South Korea
Sector: Business Services
Listed on leak site: Jun 13, 2026

About the victim

AI dossier — public-source company profile

Daechang Solution is a South Korean business services company with operations across multiple specialized teams including technical research, valve engineering, cryogenic systems, innovation, sales, finance, materials, quality assurance, general affairs, and production.

Industry: Business Services

Attack summary

Severity: high — Confirmed exfiltration of significant technical and business data across multiple sensitive departments (finance, technical research, production). Technical specifications and proprietary engineering data represent material competitive harm. No proof files referenced but disclosure statement is explicit about data possession.

Black X claims to have exfiltrated all core technical data from Daechang Solution across multiple operational teams and intends to sell the stolen data to a single buyer.

high

Data the group says was taken

AI dossier — extracted from the leak post

Technical research data
Valve engineering specifications
Cryogenic systems documentation
Innovation research
Sales records
Financial records
Materials specifications
Quality assurance documentation
Production data

What the group claims

We possess all the core technical data of Daechang Solution. (Technical Research Institute, Valve Team, Cryogenic Team, Innovation Team, Sales Team, Finance Team, Materials Team, Quality Team, General Affairs Team, Production Team) we will sell it to only one.

Sources

Victim sitedsol.co.kr
Leak posthttp://blackxppq2jvqyg4slyg3sbszv7ib2avaaycvhff5qipgdoepqi57xyd.onion/target/RsSsfhdJMFFjSS

Source

Indexed 5 hours 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 Black X

Black X is a nascent ransomware group first observed in June 2026 with limited public documentation available from major threat intelligence sources including CISA, FBI, Mandiant, or comparable research organizations. With only four known victims on record, the group remains in early operational stages, though its targeting pattern suggests a financially motivated threat actor pursuing opportunistic or selectively targeted intrusions across geographically diverse regions. The group has demonstrated activity spanning South Africa, the Philippines, South Korea, and Germany, indicating either a broad global targeting posture or the use of affiliate infrastructure capable of operating across multiple jurisdictions. Targeted sectors include Business Services, Healthcare, Energy, and the Public Sector, a mix consistent with groups seeking high-value data for double extortion leverage or organizations with lower tolerance for operational disruption and therefore greater likelihood of ransom payment. Due to the group's limited operational history and the absence of formal attribution or technical reporting from authoritative cybersecurity bodies, specific details regarding initial access vectors, tooling, encryption methodology, and affiliation structures cannot be responsibly stated at this time. Black X should be considered an emerging and closely monitored threat, and organizations operating in the identified target sectors and regions are advised to maintain heightened defensive posture pending further intelligence development. The group has been linked to 5 public disclosures across our corpus. First observed on a leak site on June 2, 2026; most recent post June 13, 2026. The operation is currently active.

Timeline of this disclosure

June 13, 2026Daechang Solution listed by Black Xon the group's public leak site

Other recent disclosures by Black X

Black X has been linked to 5 public victims on Darkfield. A sample of the most recent:

See the full Black X dossier →

Sector and geography

This disclosure adds to ransomware activity in the Business Services sector, which has 2,643 disclosures indexed across all operators we track. Geographically, Daechang Solution is reported in South Korea, a country with 16 ransomware disclosures in our corpus.

If your organisation is affected

A listing by Black X means Daechang Solution 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 Black X'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.