Ransomware victim disclosure

Korea Aerospace Industries (KAI) partner / Changwon aerospace manufacturer

Claimed by beast · listed 18 hours ago

Today

Age

since listed · data leaked

Status timeline

Listed
May 31, 2026
Data leaked

At a glance

Group: beast
Status: Data leaked
Country: South Korea
Sector: Aerospace & Defense Manufacturing
Listed on leak site: May 31, 2026

What the group claims

A major global player headquartered in Changwon, South Korea, founded in 1990. Specializes in manufacturing high-precision parts and assemblies for the aerospace industry, including 5-axis CNC metal machining and fuselage component assembly. Collaborates with global giants such as Boeing, Airbus, and Korea Aerospace Industries (KAI) for the production of military aircraft (e.g., T-50, FA-50).

The leak post

captured from the group's site

This is a major global player with the same name.
Operations: Manufacturing high-precision parts and assemblies for the aerospace industry.
Specialization: 5-axis CNC metal machining, fuselage component assembly.
Partners: Collaborates with global giants such as Boeing and Airbus, as well as Korea Aerospace Industries (KAI) for the production of military aircraft (e.g., T-50, FA-50).
Location: Headquartered in Changwon, South Korea; founded in 1990.
P U B L I S H E D

Screenshot of the leak post

Leak screenshot for Korea Aerospace Industries (KAI) partner / Changwon aerospace manufacturer

Sources

Leak posthttp://beast6azu4f7fxjakiayhnssybibsgjnmy77a6duufqw5afjzfjhzuqd.onion/card/yulkok_ltd

Source

Indexed 18 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 beast

The Beast ransomware group is a relatively new threat actor that emerged in July 2025, operating with apparent financial motivations through their ransomware campaigns. With limited public documentation available from major security agencies, the group has demonstrated activity primarily targeting victims across the United States, United Kingdom, Brazil, South Korea, and Argentina, accumulating approximately 65 known victims since their emergence. Their targeting pattern shows a focus on healthcare organizations, manufacturing companies, educational institutions, and construction firms, suggesting an opportunistic approach rather than highly specialized sector expertise. The group's recent emergence means there is insufficient public intelligence from CISA, FBI, Mandiant, or other established security researchers regarding their specific attack methodologies, initial access vectors, or technical capabilities. Given the timeline of their first observation in mid-2025, Beast represents an active and emerging threat with their current operational status remaining unclear due to limited threat intelligence reporting from authoritative sources. The group has been linked to 93 public disclosures across our corpus. First observed on a leak site on July 29, 2025; most recent post May 31, 2026. The operation is currently active.

Timeline of this disclosure

May 31, 2026Korea Aerospace Industries (KAI) partner / Changwon aerospace manufacturer listed by beaston the group's public leak site

Sector and geography

This disclosure adds to ransomware activity in the Aerospace & Defense Manufacturing sector. Geographically, Korea Aerospace Industries (KAI) partner / Changwon aerospace manufacturer is reported in South Korea, a country with 32 ransomware disclosures in our corpus.

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.