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株式会社さわやか倶楽部 (Sawayaka Club Co., Ltd.) / Bonheure

listed as Bonheure · Claimed by Spacebears · listed 4 months ago

3m
Age
since listed · data leaked

Status timeline

  1. ListedMar 19, 2026
  2. Data leakeddate unknown

At a glance

Group
Spacebears
Status
Data leaked
Country
Japan
Listed on leak site
Mar 19, 2026

About the victim

AI dossier — public-source company profile

Sawayaka Club Co., Ltd. (operating under the Bonheure/ボナー brand) is a Japanese leisure and hospitality group headquartered in Kitakyushu, Fukuoka. The company operates across four business divisions: karaoke (restaurant-karaoke chain 'Korokke Club' with 82 locations nationwide as of March 2023), food & beverage (izakaya and multi-brand dining), real estate (rental property management and brokerage centred in Kitakyushu/Fukuoka), and internet/comic cafés. It is part of the broader Uchiyama Group.

Industry
Karaoke, Food & Beverage, Real Estate & Net Café Operations
Address
〒802-0044 北九州市小倉北区熊本2丁目10番10号 内山第20ビル1F, Kitakyushu, Fukuoka, Japan

Attack summary

Severity: high — Status is 'data_published', meaning the threat actor claims to have already released exfiltrated data. The company handles customer PII across multiple consumer-facing divisions (karaoke, dining, real estate, net cafés) and employee records, representing significant business and personal data exposure. Regulated real-estate and potentially care-related (介護) data may also be involved.

The Spacebears ransomware group has listed Bonheure/Sawayaka Club as a victim with a 'data_published' status, indicating exfiltration and publication of company data. Notably, the group's leak post text describes Johnson & Johnson Innovative Medicine rather than the actual victim, suggesting possible mislabelling or a templating error in the post.

high

Data the group says was taken

AI dossier — extracted from the leak post
  • Corporate financial records (annual決算 filings noted publicly)
  • Employee/HR data
  • Customer data (karaoke, dining, real estate, net café patrons)
  • Business operational data

What the group claims

Karaoke BusinessOperation of a network of karaoke establishments, providing leisure and entertainment services for individual and corporate clients.        Restaurant Business (Izakaya)Development and management of a chain of food and beverage establishments, primarily in the Japanese izakaya style, as well as other concepts within the HoReCa sector.Real Estate OperationsInvolvement in the real estate market, including property management, leasing, and the potential development of commercial real estate assets.Internet Cafe ManagementOperation of internet cafes that provide customers with internet access along with ancillary services such as relaxation areas, reading materials, and refreshments. https://bonheure.co.jp/

The leak post

captured from the group's site
## Johnson & Johnson Innovative Medicine
Johnson & Johnson Innovative Medicine (formerly known as Janssen Pharmaceuticals) is the pharmaceutical division of the American corporation Johnson & Johnson, specializing in the development and production of revolutionary medicines. The company focuses on creating treatments for the most complex diseases, transforming the future of healthcare.

Sources

Source

Indexed 4 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.

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Disclosure context

About Spacebears

Spacebears is a recently emerged ransomware group first observed in April 2024, operating with apparent financial motivations and demonstrating a broad targeting approach across multiple sectors and geographic regions. The group's origin and potential affiliations remain unclear due to limited public documentation from established threat intelligence sources, though their targeting pattern suggests a professional operation focused on maximizing financial returns rather than geopolitical objectives. With 117 known victims since their emergence, Spacebears has shown particular focus on organizations in the United States, Germany, Spain, Italy, and Canada, with their attacks primarily affecting technology, healthcare, manufacturing, and business services sectors, indicating they likely employ opportunistic targeting rather than sector-specific specialization. Their attack methodology, initial access vectors, and specific technical capabilities have not been extensively documented in public reporting from major cybersecurity firms or law enforcement agencies, limiting detailed analysis of their operational procedures and tools. Due to the group's recent emergence and limited public intelligence reporting, notable high-profile campaigns and specific victim details remain largely undocumented in established threat intelligence channels. The group's current operational status appears active given their recent emergence timeline, though comprehensive analysis is constrained by the lack of detailed public reporting from authoritative cybersecurity sources. The group has been linked to 185 public disclosures across our corpus. First observed on a leak site on April 29, 2024; most recent post July 13, 2026. The operation is currently active.

Also tracked as: space bears.

Timeline of this disclosure

  • March 19, 2026Bonheure listed by Spacebearson the group's public leak site

Other recent disclosures by Spacebears

Spacebears has been linked to 185 public victims on Darkfield. A sample of the most recent:

See the full Spacebears dossier →

Sector and geography

Geographically, Bonheure is reported in Japan, a country with 220 ransomware disclosures in our corpus.

If your organisation is affected

A listing by Spacebears means Bonheure 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, JPCERT/CC (Japan), as required for your jurisdiction.
  • Monitor for the data appearing on Spacebears'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.