Was Camandona SA hit by ransomware?

Camandona SA was listed by the majinahanashi ransomware operation (Switzerland), and stolen data was published on the group's leak site. Darkfield tracks this disclosure with the original leak post, screenshot and group context.

Who is the majinahanashi ransomware group?

majinahanashi is a ransomware operator tracked by Darkfield. See the full operator dossier for its known victims, sectors targeted, IOCs and leak-site infrastructure.

What data was leaked in the Camandona SA breach?

majinahanashi published data attributed to Camandona SA. Darkfield captured the leak post and a screenshot of the listing.

Ransomware victim disclosure

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Camandona SA

Claimed by Majinahanashi · listed 6 days ago

Age

since listed · data leaked

Status timeline

ListedAug 12, 2026
Data leakeddate unknown

At a glance

Group: Majinahanashi
Status: Data leaked
Country: Switzerland
Listed on leak site: Aug 12, 2026

About the victim

AI dossier — public-source company profile

Camandona SA is a Swiss construction and civil engineering company based in Crissier. They provide services in civil engineering, bituminous paving (road surfaces), building construction, and renovation projects.

Industry: Civil Engineering, Road Construction & Building Renovation
Address: Rue de Cossonay 30, 1023 Crissier, Switzerland
Employees: 200

Attack summary

Severity: high — Confirmed exfiltration of a large volume (9,584 files) from a mid-sized construction company. While no specific regulated data is confirmed, the scale and business sector (construction, likely including contracts, blueprints, client information) suggests significant business data exposure.

The majinahanashi group claims to have exfiltrated 9,584 files from Camandona SA. The specific data categories at risk are not detailed in the leak post.

high

Data the group says was taken

AI dossier — extracted from the leak post

Business documents
Project files
Company records

The group's post references roughly 9584 proof files.

What the group claims

TARGET: https://www.camandona.ch/ REVENUE: $61.7M EMPLOYEES: 200 [LEAK / 9584 FILES]

Sources

Victim sitewww.camandona.ch

Source

Indexed 6 days 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.

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Disclosure context

About majinahanashi

Majinahanashi is an emerging ransomware group first observed in August 2026 with an apparent financial motivation, having claimed at least 12 victims across multiple continents in a relatively short operational window. At the time of this profile, no authoritative public attribution has been established by CISA, the FBI, Mandiant, or other reputable security research organizations regarding the group's country of origin, affiliations with known threat actor clusters, or whether it operates under a Ransomware-as-a-Service model or as an independent closed group. Based on available victimology data, the group has demonstrated a geographically diverse targeting pattern spanning Italy, the United States, Portugal, Switzerland, and Colombia, suggesting either a broad opportunistic approach or the use of affiliate infrastructure with varied regional reach. Targeted sectors include manufacturing, retail and e-commerce, healthcare, and technology, alongside victims whose sector classification remains unattributed, a distribution consistent with financially motivated actors prioritizing vulnerable or high-value targets over ideological selection criteria. No specific tools, initial access vectors, encryption methodologies, or extortion tactics have been publicly documented for this group by authoritative sources at this time, and no notable high-profile campaigns, record ransom demands, or law enforcement actions against the group have been publicly reported. Majinahanashi should be considered an active and developing threat given its recent emergence, and organizations in its targeted geographies and sectors are advised to monitor credible threat intelligence channels for updated attribution and technical indicators as reporting matures. The group has been linked to 15 public disclosures across our corpus. First observed on a leak site on August 12, 2026; most recent post August 16, 2026. The operation is currently active.

Timeline of this disclosure

August 12, 2026Camandona SA listed by majinahanashion the group's public leak site

Other recent disclosures by majinahanashi

majinahanashi has been linked to 15 public victims on Darkfield. A sample of the most recent:

See the full majinahanashi dossier →

Sector and geography

Geographically, Camandona SA is reported in Switzerland, a country with 39 ransomware disclosures in our corpus.

If your organisation is affected

A listing by majinahanashi means Camandona SA appeared on a ransomware extortion site and data attributed to it has been published. If this is your organisation, or a supplier you depend on, the priority is to confirm the intrusion and contain it before the window to act closes.

Engage your incident-response team and preserve forensic evidence before remediating — do not wipe affected systems first.
Force a password reset and revoke active sessions for exposed accounts; rotate any credentials, API keys or certificates that may have been in the stolen data.
Assess regulatory notification duties (GDPR, NIS2, sector regulators) — many carry a 72-hour reporting clock from awareness.
Report the incident to your national CERT, NCSC-CH (Switzerland), as required for your jurisdiction.
Monitor for the data appearing on majinahanashi's leak site and across paste and breach channels, and brief downstream partners who may be exposed through you.

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.