Was Stellar hit by ransomware?

Stellar was listed by the Spacebears ransomware operation (Turks & Caicos Islands), 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 Spacebears ransomware group?

Spacebears 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 Stellar breach?

Spacebears published data attributed to Stellar (~1.6 TB), around 12 files records. Darkfield captured the leak post and a screenshot of the listing.

Ransomware victim disclosure

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Stellar Telecommunications SAS

listed as Stellar · Claimed by Spacebears · listed 3 months ago

1.6 TB

Data size

12 files records

Age

since listed · data leaked

Status timeline

ListedJun 2, 2026
Data leakeddate unknown

At a glance

Group: Spacebears
Status: Data leaked
Country: Turks & Caicos Islands
Listed on leak site: Jun 2, 2026
Data size: 1.6 TB
Records: 12 files

About the victim

AI dossier — public-source company profile

Stellar Telecommunications SAS is a European telecommunications company founded in 2021, headquartered in Bordeaux, France with critical operations in Luxembourg. They provide multi-network orchestration solutions combining terrestrial (cellular, Wi-Fi, fiber) and satellite networks for mobility, enterprise, and government customers across 186 countries.

Industry: Telecommunications & Satellite Connectivity
Address: Bordeaux, France (headquarters); Luxembourg (critical operations)
Founded: 2021

Attack summary

Severity: medium — Data has been published by the group (disclosed_status: data_published) but the leak post excerpt provides no proof files, screenshots, or inventory of sensitive data types. The company operates in critical infrastructure (government, enterprise connectivity) which elevates concern, but without evidence of specific data exfiltration or operational disruption, severity remains moderate.

The spacebears group claims to have accessed Stellar's systems and published data. No specific details on encryption, exfiltration scope, or data types are provided in the available post excerpt.

medium

What the group claims

Stellar’s mission is to bring resilient connectivity to mobility, enterprise, and governments, by combining the very best of terrestrial (cellular, Wi-Fi, fiber) and satellite networks into one unbreakable solution.Stellar Telecommunications SAS ("Stellar"), was founded in 2021 as a truly European company: headquartered in Bordeaux, France, it also runs critical activities from Luxembourg.- Database- Production Config https://www.stellar.tc/

The leak post

captured from the group's site

Stellar’s mission is to bring resilient connectivity to mobility, enterprise, and governments, by combining the very best of terrestrial (cellular, Wi-Fi, fiber) and satellite networks into one unbreakable solution.Stellar Telecommunications SAS ("Stellar"), was founded in 2021 as a truly European company: headquartered in Bordeaux, France, it also runs critical activities from Luxembourg.

Screenshot of the leak post

Sources

Victim sitewww.stellar.tc
Leak posthttp://5butbkrljkaorg5maepuca25oma7eiwo6a2rlhvkblb4v6mf3ki2ovid.onion/companies/45/stellar

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.

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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 209 public disclosures across our corpus. First observed on a leak site on April 29, 2024; most recent post August 22, 2026. The operation is currently active.

Also tracked as: space bears.

Timeline of this disclosure

June 2, 2026Stellar listed by Spacebearson the group's public leak site

Data size: 1.6 TB
Records: 12 files

Other recent disclosures by Spacebears

Spacebears has been linked to 209 public victims on Darkfield. A sample of the most recent:

See the full Spacebears dossier →

Sector and geography

Geographically, Stellar is reported in Turks & Caicos Islands.

If your organisation is affected

A listing by Spacebears means Stellar 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.
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.