Was Keystone Engineering hit by ransomware?

Keystone Engineering was listed by the Spacebears ransomware operation (United States), 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 Keystone Engineering breach?

Spacebears published data attributed to Keystone Engineering. Darkfield captured the leak post and a screenshot of the listing.

Ransomware victim disclosure

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Keystone Engineering

Claimed by Spacebears · listed 2 years ago

23m

Age

since listed · data leaked

Status timeline

ListedAug 2, 2024
Data leakeddate unknown

At a glance

Group: Spacebears
Status: Data leaked
Country: United States
Sector: Business Services
Listed on leak site: Aug 2, 2024

About the victim

AI dossier — public-source company profile

Keystone Engineering Company is a family-owned manufacturer specializing in composite materials and oilfield equipment, with over 65 years of experience. They produce formation measurement instrument assemblies for wireline, MWD, and LWD applications, as well as high-temperature composite bridge plugs rated to 400°F.

Industry: Oilfield Equipment Manufacturing & Composite Fabrication
Founded: 1950

Attack summary

Severity: high — Confirmed exfiltration of sensitive business data (financial records, technical drawings) combined with employee PII exposure. Manufacturing/design data for oilfield equipment could have operational or competitive impact.

Spacebears claims to have exfiltrated technical drawings, financial documents, employee personal information, and QuickBooks backup files from Keystone Engineering.

high

Data the group says was taken

AI dossier — extracted from the leak post

technical drawings
financial documents
employee personal information
QuickBooks backups

What the group claims

Keystone is a family business with over 65 years of proven manufacturing and composite material fabrication experience in the oilfield industry.Since 1950 Keystone Engineering Company has maintained a proven reputation for reliable products in the oilfield industry. Product experience includes the manufacture and production of formation measurement instrument assemblies for wireline, MWD, and LWD; and the manufacture and production of high-temperature, 400° F (204° C), composite bridge plugs. -drawings-financial documents-personal information of employees-quickbook backups http://keystoneeng.com

Sources

Victim sitekeystoneeng.com
Leak posthttp://5butbkrljkaorg5maepuca25oma7eiwo6a2rlhvkblb4v6mf3ki2ovid.onion/companies/31/keystone-engineering

Source

Indexed 2 years 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

August 2, 2024Keystone Engineering 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

This disclosure adds to ransomware activity in the Business Services sector, which has 3,796 disclosures indexed across all operators we track. Geographically, Keystone Engineering is reported in United States, a country with 11,033 ransomware disclosures in our corpus.

If your organisation is affected

A listing by Spacebears means Keystone Engineering 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, CISA (United States), 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.