Disclosure context

About killsec

killsec is a relatively new ransomware group that emerged in March 2024, operating with apparent financial motivations and demonstrating broad targeting across multiple geographic regions and industry sectors. The group's origin and potential state affiliations remain unclear due to limited public documentation from major threat intelligence sources, though their targeting pattern suggests opportunistic rather than geopolitically motivated operations. With 276 documented victims primarily concentrated in the United States, India, the United Kingdom, Brazil, and Belgium, killsec appears to focus heavily on healthcare, technology, business services, and financial sectors, indicating either specific tooling designed for these environments or opportunistic targeting of organizations with valuable data and high pressure to restore operations quickly. Given the group's recent emergence and the lack of detailed technical analysis from established cybersecurity firms like Mandiant or law enforcement advisories from CISA or FBI, specific details about their attack methodology, initial access vectors, encryption techniques, and extortion tactics have not been publicly documented in authoritative sources. The group remains active as of current reporting, though the limited intelligence profile suggests they may be either a smaller operation or one that has not yet attracted significant attention from major threat intelligence organizations despite their substantial victim count. The group has been linked to 279 public disclosures across our corpus. First observed on a leak site on March 21, 2024; most recent post May 14, 2026. The operation is currently active.

Timeline of this disclosure

March 6, 2026MyFair listed by killsecon the group's public leak site

Sector and geography

This disclosure adds to ransomware activity in the Not Found sector, which has 4,859 disclosures indexed across all operators we track. Geographically, MyFair 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.

Ransomware victim disclosure

← All victims

MyFair (주식회사 마이페어)

listed as MyFair · Claimed by killsec · listed 3 months ago

Age

since listed · data leaked

Status timeline

Listed
Mar 6, 2026
Data leaked

At a glance

Group: killsec
Status: Data leaked
Country: South Korea
Sector: Not Found
Listed on leak site: Mar 6, 2026

About the victim

AI dossier — public-source company profile

MyFair (주식회사 마이페어) is a South Korean SaaS platform headquartered in Gangnam-gu, Seoul, providing overseas trade fair and exhibition participation solutions to exporters, SMEs, and industry associations. The platform enables users to search global exhibitions, reserve booths, connect with specialist partners (logistics, translation, booth design), and manage all participation workflows. It is an official certified operator under South Korea's Export Voucher (수출바우처) programme.

Industry: Trade Fair & Exhibition Management SaaS
Address: (06180) 서울특별시 강남구 영동대로85길 38 KC빌딩 4층 (KC Building 4F, 38 Yeongdong-daero 85-gil, Gangnam-gu, Seoul, South Korea 06180)

Attack summary

Severity: medium — Disclosure status is marked data_published, implying some data has been released, but the leak post provides virtually no corroborating detail—no data volume, no ransom, no proof file count, and no description of what was exfiltrated. The company handles customer business data and potentially PII of Korean exporters, warranting at least medium severity, but the absence of any substantiated evidence of sensitive data exposure prevents a higher rating.

Killsec claims to have attacked MyFair and has published the disclosure with a status of data_published; however, the leak post contains minimal detail, with no explicit description of encryption or exfiltration methods and no stated ransom amount or data volume.

medium

What the group claims

Price ??? Disclosures 0/1

Sources

Victim sitemyfair.co

Source

Indexed 3 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.