Was eFunda, Inc. hit by ransomware?

eFunda, Inc. was listed by the bqtlock 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 bqtlock ransomware group?

bqtlock 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 eFunda, Inc. breach?

bqtlock published data attributed to eFunda, Inc.. Darkfield captured the leak post and a screenshot of the listing.

Ransomware victim disclosure

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eFunda, Inc.

Claimed by Bqtlock · listed 1 year ago

11m

Age

since listed · data leaked

Status timeline

ListedJul 31, 2025
Data leakeddate unknown

At a glance

Group: Bqtlock
Status: Data leaked
Country: United States
Sector: Technology
Listed on leak site: Jul 31, 2025

About the victim

AI dossier — public-source company profile

eFunda, Inc. operates an online reference platform for engineers offering calculators, design tools, formulas, materials databases, and community forums. Founded in 1999, the company provides resources for mechanical engineering, materials science, and industrial design.

Industry: Engineering Software & Online Reference
Founded: 1999

Attack summary

Severity: medium — Confirmed breach of a technology/reference platform with 270+ subdomains affected, but no explicit proof files shown and no specific sensitive data types (PII, financial, medical) confirmed in the post. Data size and exfiltration details not disclosed.

The bqtlock group claims to have compromised eFunda and lists 270+ subdomains in the leak post. No specific data exfiltration details or proof files are described in the available leak post excerpt.

medium

Data the group says was taken

AI dossier — extracted from the leak post

Web infrastructure & subdomains
User database (potential)
Engineering reference content
Forum/community data (potential)

What the group claims

efunda.com (270+ subdomains)

Sources

Victim siteefunda.com
Leak posthttp://yywhylvqeqynzik6ibocb53o2nat7lmzn5ynjpar3stndzcgmy6dkgid.onion

Source

Indexed 1 year 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 bqtlock

Based on available intelligence, bqtlock is a recently emerged ransomware group first observed in July 2025, with documented attacks against at least five victims and appears to be financially motivated. The group's origin and affiliations remain unclear due to limited public documentation from established threat intelligence sources, though their targeting pattern suggests possible operation from regions outside their primary victim countries. Attack methodologies and technical capabilities have not been extensively documented by major security firms, though the group appears to focus on opportunistic targeting across diverse sectors including technology, public sector, and educational institutions. The ransomware primarily targets organizations in the United States and United Arab Emirates, suggesting either specific regional interests or exploitation of common vulnerabilities in these markets. Due to the group's recent emergence and limited public reporting from authoritative sources like CISA, FBI, or established security researchers, detailed information about their specific tools, tactics, and procedures remains undocumented in open-source intelligence. The group appears to remain active as of their recent identification in mid-2025, though their operational scale and long-term persistence remain to be determined. The group has been linked to 5 public disclosures across our corpus. First observed on a leak site on July 31, 2025; most recent post October 11, 2025. The operation is currently inactive.

Timeline of this disclosure

July 31, 2025eFunda, Inc. listed by bqtlockon the group's public leak site

Other recent disclosures by bqtlock

bqtlock has been linked to 5 public victims on Darkfield. A sample of the most recent:

See the full bqtlock dossier →

Sector and geography

This disclosure adds to ransomware activity in the Technology sector, which has 3,549 disclosures indexed across all operators we track. Geographically, eFunda, Inc. is reported in United States, a country with 11,033 ransomware disclosures in our corpus.

If your organisation is affected

A listing by bqtlock means eFunda, Inc. 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 bqtlock'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.