Was Wonjin Plastic Surgery hit by ransomware?

Wonjin Plastic Surgery 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 Wonjin Plastic Surgery breach?

Black X published data attributed to Wonjin Plastic Surgery. Darkfield captured the leak post and a screenshot of the listing.

Ransomware victim disclosure

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Wonjin Plastic Surgery

Claimed by Black X · listed 2 months ago

57d

Age

since listed · data leaked

Status timeline

ListedJun 2, 2026
Data leakeddate unknown

At a glance

Group: Black X
Status: Data leaked
Country: South Korea
Sector: Healthcare
Listed on leak site: Jun 2, 2026

About the victim

AI dossier — public-source company profile

Wonjin Plastic Surgery (WJ 원진성형외과) is a South Korean cosmetic surgery clinic offering procedures including facial contouring, breast augmentation, body sculpting, and skin treatments. The clinic emphasizes patient safety through specialized anesthesiologists and modern medical facilities.

Industry: Cosmetic & Plastic Surgery

Attack summary

Severity: critical — Confirmed exfiltration of regulated healthcare data including personally identifiable information (PII), medical records, and financial information (credit card details) at patient scale. South Korean resident registration numbers are highly sensitive government identifiers. Medical data is protected under healthcare privacy laws.

Black X claims to have exfiltrated data from Wonjin Plastic Surgery. The group published patient records and operational data; the leak post includes content from the clinic's public website and privacy policy detailing collected personal information.

critical

Data the group says was taken

AI dossier — extracted from the leak post

Patient names
Patient addresses
South Korean resident registration numbers (주민등록번호)
Phone and mobile numbers
Medical history and surgical records
Family medical history
Credit card payment information
Email addresses
Service usage logs and IP addresses
Consultation records

What the group claims

WJ Wonjin's medical staff work to achieve the optimal effect according to each individual patient's condition and desired result.   Our medical services are provided by specialist doctors on-site, and our interpreting coordinators assist throughout the whole process.   Safest Anesthesia System by Exclusive Anesthesiologists. We value our patients' safety during their surgery using cutting edge anesthesia system.   Fully equipped with specialized medical facilities and system from the very beginning, we value safety for our patients.

Sources

Victim sitewww.k-wonjin.co.kr
Leak posthttp://blackxppq2jvqyg4slyg3sbszv7ib2avaaycvhff5qipgdoepqi57xyd.onion/target/KBEybqQZDDPwQY

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 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 8 public disclosures across our corpus. First observed on a leak site on June 2, 2026; most recent post July 29, 2026. The operation is currently active.

Timeline of this disclosure

June 2, 2026Wonjin Plastic Surgery listed by Black Xon the group's public leak site

Other recent disclosures by Black X

Black X has been linked to 8 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 Healthcare sector, which has 2,603 disclosures indexed across all operators we track. Geographically, Wonjin Plastic Surgery is reported in South Korea, a country with 18 ransomware disclosures in our corpus.

If your organisation is affected

A listing by Black X means Wonjin Plastic Surgery 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, KrCERT/CC (South Korea), as required for your jurisdiction.
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.