Disclosure context

About worldleaks

Based on the limited available data, worldleaks is a recently emerged ransomware group that was first observed in May 2025 and appears to be primarily financially motivated, having claimed 134 victims in a relatively short timeframe since its emergence. The group's origin and organizational structure remain unclear, with no publicly documented information from major cybersecurity firms or law enforcement agencies regarding their country of origin, potential affiliations, or operational model. Their targeting patterns indicate a focus on English-speaking countries, particularly the United States, United Kingdom, and Canada, with additional activity observed in Germany and Japan, while their sector targeting shows a preference for healthcare, technology, manufacturing, and consumer services organizations. Due to the group's recent emergence and limited public documentation by established threat intelligence sources, specific details about their attack methodologies, encryption techniques, extortion tactics, and notable campaigns have not yet been comprehensively analyzed or reported by organizations such as CISA, FBI, or major cybersecurity research firms. The group appears to remain active as of the most recent observations, though comprehensive threat intelligence profiling awaits further analysis and documentation by established cybersecurity authorities. The group has been linked to 155 public disclosures across our corpus. First observed on a leak site on May 18, 2025; most recent post May 12, 2026. The operation is currently active.

Timeline of this disclosure

April 2, 2026National Aerospace Fasteners listed by worldleakson the group's public leak site

Sector and geography

This disclosure adds to ransomware activity in the Manufacturing sector, which has 2,458 disclosures indexed across all operators we track. Geographically, National Aerospace Fasteners is reported in TW, a country with 46 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.

Ransomware victim disclosure

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National Aerospace Fasteners

Claimed by worldleaks · listed 2 months ago

48d

Age

since listed · data leaked

Status timeline

Listed
Apr 2, 2026
Data leaked

At a glance

Group: worldleaks
Status: Data leaked
Country: TW
Sector: Manufacturing
Listed on leak site: Apr 2, 2026

About the victim

AI dossier — public-source company profile

National Aerospace Fasteners Corporation is a Taiwan-based manufacturer specializing in high-strength fasteners for the aerospace sector. Its product range includes bolts, screws, studs, and nuts used in critical aircraft components such as engines, fuselages, and landing gear. The company produces fastening solutions that conform to strict aerospace industry standards.

Industry: Aerospace Fasteners Manufacturing

Attack summary

Severity: high — The disclosure status is data_published, confirming exfiltration and release of data from a supplier to the aerospace/defence industry. Aerospace component manufacturers handle sensitive technical specifications, supply chain data, and potentially export-controlled information, making any confirmed data publication significant even without an itemised inventory.

The worldleaks group has disclosed data from National Aerospace Fasteners Corporation, with the post marked as data_published, indicating exfiltration and publication of company data. No specific ransom demand or data size was stated in the leak post.

high

Data the group says was taken

AI dossier — extracted from the leak post

Internal company files
Aerospace manufacturing data

Original description

AI-summarised, not from the leak post

National Aerospace Fasteners Corporation is a Taiwan-based company primarily engaged in the manufacture and sale of high-strength fasteners for aerospace. Its main products include bolts, screws, studs, and nuts, which are used in engines, fuselages, landing gear, and other aircraft applications. The company offers fastening solutions that meet strict aerospace industry standards.

Sources

Victim sitewww.nafco.com.tw
Leak posthttps://worldleaksartrjm3c6vasllvgacbi5u3mgzkluehrzhk2jz4taufuid.onion/companies/5731562994

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.