Disclosure context

About Ransomhouse

Ransomhouse is a ransomware group that emerged in June 2021, operating primarily for financial gain through extortion campaigns targeting organizations across multiple sectors globally. The group's origin and specific affiliations remain unclear based on publicly available intelligence, though their operational patterns suggest they function as an independent cybercriminal organization rather than a traditional ransomware-as-a-service model. Ransomhouse employs double extortion tactics, stealing sensitive data before deploying their ransomware payload and threatening to publish the information on their leak site if victims refuse to pay the demanded ransom. The group has demonstrated a broad targeting approach, with documented attacks against 187 victims primarily concentrated in the United States, China, United Kingdom, Italy, and Spain, focusing heavily on healthcare, technology, business services, and manufacturing sectors. While specific high-profile campaigns have not been extensively documented by major security firms, the group's consistent victim count and geographic distribution indicate sustained operational capability since their emergence. As of current reporting, Ransomhouse remains active with no known major law enforcement disruptions or confirmed rebranding efforts. The group has been linked to 202 public disclosures across our corpus. First observed on a leak site on June 1, 2021; most recent post May 8, 2026. The operation is currently active.

Timeline of this disclosure

March 12, 2026Bioptik Technology listed by Ransomhouseon the group's public leak site

Data size: 743 GB
Ransom demanded: $740

Sector and geography

This disclosure adds to ransomware activity in the Technology sector, which has 2,524 disclosures indexed across all operators we track. Geographically, Bioptik Technology is reported in Taiwan, a country with 12 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

Bioptik Technology

Claimed by Ransomhouse · listed 2 months ago

743 GB

Data size

$740

Ransom

demanded

Age

since listed · data leaked

Status timeline

Listed
Mar 12, 2026
Data leaked

At a glance

Group: Ransomhouse
Status: Data leaked
Country: Taiwan
Sector: Technology
Listed on leak site: Mar 12, 2026
Data size: 743 GB
Ransom demanded: $740

About the victim

AI dossier — public-source company profile

Bioptik Technology Inc. is a Taiwan-based company specializing in the research, development, production, and worldwide distribution of multi-functional medical diagnostic devices (including blood glucose monitors), dietary supplements (OEM/ODM), cosmetics, and pet healthcare products. The company operates with full vertical integration from R&D through manufacturing and maintains an in-house R&D team. It serves both direct consumers and B2B clients seeking OEM/ODM services.

Industry: Medical Diagnostic Devices & Health Products Manufacturing
Address: Taiwan
Employees: 30

Attack summary

Severity: high — Bioptik manufactures medical diagnostic devices and handles health-related product data; a confirmed encryption event with public disclosure on a ransomware leak site targeting a medical device manufacturer constitutes significant business and potentially regulated health-sector data exposure, even though the exact exfiltrated data volume for this specific victim is unconfirmed.

RansomHouse claims to have encrypted Bioptik Technology's systems on or around 6 April 2026 and has disclosed the compromise publicly; the leak post indicates 743 GB of data volume is associated with the broader campaign context, though the data size field for Bioptik's specific entry shows a tilde (~), suggesting the exact exfiltrated volume for this victim is unconfirmed.

high

Data the group says was taken

AI dossier — extracted from the leak post

Medical diagnostic device data
Research and development files
Manufacturing records
OEM/ODM client information
Corporate business records
Employee data
Customer/distribution data

What the group claims

Bioptik Technology Inc. is a Taiwan-based biotechnology company specializing in the research, development, production, and worldwide distribution of medical diagnostic devices, reagents, and skincare products. With a fully in-house R&D team and complete vertical integration from development to manufacturing, Bioptik maintains its core commitment to the highest quality standards and maximum customer satisfaction.

The leak post

captured from the group's site

```
{"data":[{"id":"a1894b76b7004c75a3a0845799af49956592e3d9","display":"animated","header":"HOT NEWS","info":" Trellix is a global cybersecurity company.","url":"","sort":1,"views":"436242"},{"id":"336b257f582b17573c97578efd4b22762bf77344","sort":2,"header":"Trellix (McAfee & FireEye)","url":"https://www.trellix.com/","private":"false","revenue":"1.5-2 B$","employees":"5000","info":"Trellix is a global cybersecurity company formed from the October 2021 merger of McAfee Enterprise and FireEye. It provides services to over 50,000 business and government customers worldwide, protecting more than 200 million endpoints. The companys open and native extended detection and response (XDR) platform helps organizations confronted by todays most advanced threats gain confidence in the protection and resilience of their operations. Trellix, along with an extensive partner ecosystem, accelerates technology innovation through machine learning and automation to empower over 40,000 business and government customers with living security","statusDate":"DEPENDS ON YOU","status":"EVIDENCE","published":"NOT YET","action":"Encrypted","actionDate":"17/04/2026","volume":"~","content":"cybersecurity.html"…

Sources

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.