Disclosure context

About krybit

Krybit is an emerging ransomware group that was first observed in April 2026, operating with apparent financial motivations based on their limited documented attacks against diverse sectors. The group's origin and affiliations remain unclear due to limited public intelligence, and it is unknown whether they operate as a Ransomware-as-a-Service model or as an independent entity. With only four known victims documented across geographically diverse regions including Mexico, Austria, Japan, and Botswana, the group appears to employ broad targeting rather than focused regional or sector-specific campaigns, though their attack methodology, encryption techniques, and data exfiltration practices have not been publicly documented by major security firms or law enforcement agencies. No notable high-profile campaigns or significant ransoms have been publicly reported, and no law enforcement actions against the group have been documented. Given the recent emergence of this group and extremely limited public reporting, Krybit's current operational status and capabilities remain largely unknown to the broader cybersecurity community. The group has been linked to 31 public disclosures across our corpus. First observed on a leak site on April 3, 2026; most recent post May 19, 2026. The operation is currently active.

Timeline of this disclosure

April 8, 2026Gerald Zisser GmbH listed by krybiton the group's public leak site

Sector and geography

This disclosure adds to ransomware activity in the Business Services sector, which has 2,640 disclosures indexed across all operators we track. Geographically, Gerald Zisser GmbH is reported in DE, a country with 333 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

Gerald Zisser GmbH

Claimed by krybit · listed 1 month ago

42d

Age

since listed · data leaked

Status timeline

Listed
Apr 8, 2026
Data leaked

At a glance

Group: krybit
Status: Data leaked
Country: DE
Sector: Business Services
Listed on leak site: Apr 8, 2026

About the victim

AI dossier — public-source company profile

Gerald Zisser GmbH is a private Austrian company specializing in building technical services, with a focus on plumbing, heating, and related building systems. The company operates in Austria and serves both commercial and residential clients. No further details on scale or founding date are available from the leak post or public sources.

Industry: Building Technical Services & Plumbing

Attack summary

Severity: medium — Data has been published by the group (disclosed status: data_published), indicating confirmed exfiltration, but no specific data types, volume, or regulated/sensitive data categories are described in the leak post, and no proof file count or ransom is stated.

The krybit ransomware group has listed Gerald Zisser GmbH as a victim with a disclosed status of data_published, indicating that data has been exfiltrated and published. No specific ransom amount or data volume was stated in the post.

medium

What the group claims

Gerald Zisser GmbH is a private Austrian company specializing in building technical services, focusing on plumbing, heat...

The leak post

captured from the group's site

ECLAGESTIÓ A Spanish company specializing in comprehensive management for businesses and individuals, operating in the... 
Ovex Tech specializes in providing comprehensive BPO services and call center solutions, including inbound and outbound ... 
Foodsmart Dominicana, S.R.L A company operating in the food industry Specializing in flour derivative products (harina... 
Bomu Hospital is a social enterprise dedicated to providing access to quality healthcare for all individuals, regardless... 
WEISS PM: The ideal company for tailored recruitment solutions. For nearly 40 years, WEISS PM has been a trusted partner... 
ZSIC Life Plc is a leading assurance, savings, and wealth management company in Zambia, offering a diverse range of life... 
moser-spiel.at is an Austrian company specializing in the design and manufacture of outdoor play equipment and sports pa... 
Narteks Tekstil Sanayi ve Ticaret A.Ş., one of the well-known Turkish companies in the cotton yarn and textile industry... 
The attorneys at the Imbrie Law Firm practice primarily in the following counties: Brazos, Robertson, Burleson, Lee, Gri... 
iseg Spezialelektronik GmbH is a German company specializing in high-voltage mic…

Screenshot of the leak post

Sources

Source

Indexed 1 month 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.