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Leak-site post naming Taekwang Network, captured by ThreatCluster

Taekwang Network

everest

Ransomware leak-site victim intelligence

Data size
263.71 GB
Files
54,581
Views
4,200
Posted
Oct 17, 2026
Countdown
0 6 d : 1 0 h : 4 6 m : 0 8 s
Country
South Korea
Industry
Network integration

Summary

Written by ThreatClusterfrom file listing, victim profile, leak post, screenshot, ransom note

Everest claims to have exfiltrated 263.71 GB from Taekwang Network Information, comprising 54,581 files. The group states the data includes HR records, financial data, hospital project materials, university and school records, and emails. The leak page shows a countdown publication status. Victim profile per the leak page: Taekwang Network Information (태광네트웍정보), a South Korean network integration company, with platforms named including Ruckus, Cisco, Fortinet and AhnLab.

Describes what the group claims on its leak site. A listing is not confirmation that a breach occurred.

Victim profile

Platforms
Ruckus Cisco Fortinet AhnLab

What was taken

The tknoffice materials relate to Taekwang Network Information (태광네트웍정보), a South Korean network integration company. Its areas of work include network integration (NI), KT Managed, KT Flexline, wireless networks using Wi-Fi access points (AP), switching, firewalls, authentication servers and access control. The documents cover successive project stages: site surveys, solution design, pricing, procurement, installation, configuration, testing and maintenance. Commercial workbooks link clients to equipment, services, terms and contacts; engineering materials record device placement, cable routes, configurations and fault histories. The main client sectors are hospitals, universities and schools, financial institutions, industrial companies and public infrastructure. Major document sets cover the four Paik hospitals, KDI, Korea International School, Seoul International School, SMBC trading-desk communications, Hanwha Total industrial networks and the Seoul Metro Wi-Fi proposal. The integrator's own working materials are stored alongside documentation from Ruckus, Cisco, Fortinet and AhnLab, as well as partners' proposals. The collection includes user-interface code, editable radio models and integration designs.

Data categories
HR recordsfinancial datahospital project materialsuniversity and school recordsemails
File types seen
dwg × 767esx × 191pdf × 4,142pst × 2pcap × 77pptx × 3,588xlsx × 1,333
Sample files (2)
2025 사업계획서_NI사업본부_v2.5.pptx
고객사_구축자료

Ransom note

Published by the group on their leak site, reproduced verbatim.

The files will be published after the timer counts down. The company still has time to get in touch with us

Leak-site images (11)

Images from the victim's leak listing. Thumbnails scraped from the onion page are blurred by default — click a thumbnail to view.

ThreatCluster capture
onion leak page11 KB
Logo of the Brenner Base Tunnel (BBT) project, featuring the acronym "BBT" and the full name in Italian.
onion leak page28 KB
Logo featuring the text "태광네트워크정보" with the English subtitle "Total Network Solutions Provider."
onion leak page2.3 KB
The image contains a logo featuring the word "bend" in lowercase letters, accompanied by a circular symbol above the text.
onion leak page2.3 KB
Logo featuring the word "KISSEI" in blue, with a circular emblem containing stylized waves.
onion leak page145 KB
Logo of Topcon Healthcare featuring the name "Topcon" in black and "Healthcare" in purple.
onion leak page14 KB
Logo featuring two figures performing CPR, with the text "Laerdal" and the tagline "helping save lives."
onion leak page21 KB
Logo of flydubai, featuring the name in lowercase letters with an orange and blue color scheme.
onion leak page5.6 KB
Logo featuring the text "MORCON" in bold silver letters, with "DEVELOPMENTS" in smaller text below, and a stylized blue and silver "M" above.
onion leak page44 KB
Logo featuring two stylized figures in blue, with an upward arrow in gray, symbolizing growth or progress.
onion leak page1.8 KB