Disclosure context

About minteye

Based on available information, minteye is an emerging ransomware group first observed in December 2025 with limited documented activity, having targeted at least five known victims primarily for financial gain. The group's origin and affiliations remain unknown, with no publicly documented information from major security firms regarding their operational structure or whether they operate as a ransomware-as-a-service model. Their attack methodology, encryption techniques, and specific tools have not been extensively documented by reputable security researchers, though their targeting pattern suggests they focus on diverse sectors including construction, transportation/logistics, and agriculture/food production. The group has primarily targeted organizations in the United States and Chile, indicating either a regional focus or opportunistic targeting based on access rather than strategic selection. No major high-profile campaigns or significant law enforcement actions have been publicly reported by CISA, FBI, or established threat intelligence firms. Given the recent emergence date of December 2025 and limited victim count, minteye appears to be a newly active group with minimal public documentation of their capabilities or impact. The group has been linked to 5 public disclosures across our corpus. First observed on a leak site on December 12, 2025. The operation is currently active.

Timeline of this disclosure

December 12, 2025Sponseller Group, Inc. listed by minteyeon the group's public leak site

Data size: 300 GB

Sector and geography

This disclosure adds to ransomware activity in the Not Found sector, which has 4,859 disclosures indexed across all operators we track. Geographically, Sponseller Group, Inc. is reported in United States, a country with 7,392 ransomware disclosures in our corpus.

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.

Ransomware victim disclosure

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Sponseller Group, Inc.

Claimed by minteye · listed 5 months ago

300 GB

Data size

Age

since listed · data leaked

Status timeline

Listed
Dec 12, 2025
Data leaked

At a glance

Group: minteye
Status: Data leaked
Country: United States
Sector: Not Found
Listed on leak site: Dec 12, 2025
Data size: 300 GB

About the victim

AI dossier — public-source company profile

Sponseller Group, Inc. is a multi-discipline engineering firm headquartered in Holland (Toledo area), Ohio, with an additional office in Sidney, Ohio. The firm provides structural engineering, HVAC design, industrial architecture, automotive/manufacturing engineering, material handling systems, and 3-D laser scanning services. It serves clients in the manufacturing, processing, and construction industries across Northwest Ohio and the broader United States.

Industry: Structural & Multi-Discipline Engineering Services
Address: 1600 Timberwolf Drive, Holland, OH 43528

Attack summary

Severity: high — 300 GB of data has been published by the threat actor, confirming exfiltration of significant business data. The firm handles sensitive client engineering projects for manufacturing and industrial clients across the US; exposure of proprietary design files and client data represents a serious business and potentially security-relevant disclosure.

The minteye ransomware group claims to have exfiltrated 300 GB of data from Sponseller Group, Inc., with the status listed as data_published, indicating the stolen data has been released or made available on their leak site.

high

Data the group says was taken

AI dossier — extracted from the leak post

Engineering project files
Structural design documents
Client project data
Business/operational records
Potentially proprietary CAD/BIM files (REVIT, SolidWorks, AutoCAD)

What the group claims

Size: 300 GB

Sources

Victim sitewww.sponsellergroup.com

Source

Indexed 5 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.