Was Upstate Glass Tempering hit by ransomware?

Upstate Glass Tempering was listed by the Sarcoma ransomware operation (Spain), 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 Sarcoma ransomware group?

Sarcoma 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 Upstate Glass Tempering breach?

Sarcoma published data attributed to Upstate Glass Tempering (~95 GB). Darkfield captured the leak post and a screenshot of the listing.

Ransomware victim disclosure

← All victims

Upstate Glass Tempering

Claimed by Sarcoma · listed 1 year ago

95 GB

Data size

17m

Age

since listed · data leaked

Status timeline

ListedFeb 10, 2025
Data leakeddate unknown

At a glance

Group: Sarcoma
Status: Data leaked
Country: Spain
Sector: Manufacturing
Listed on leak site: Feb 10, 2025
Data size: 95 GB

About the victim

AI dossier — public-source company profile

Upstate Glass Tempering is a US-based glass fabrication company specializing in custom tempered and laminated glass products for architectural and industrial applications. The company operates advanced machinery including European tempering equipment and a laminating line, and offers protective coatings via proprietary chemical vapor deposition technology.

Industry: Glass Manufacturing & Processing

Attack summary

Severity: high — Confirmed exfiltration of 95 GB including email systems and databases; likely contains customer PII, business intelligence, and operational data at significant scale. Data already published.

Sarcoma claims to have exfiltrated 95 GB of data from Upstate Glass Tempering, including files, SQL databases, and Exchange email systems. The group has published the data.

high

Data the group says was taken

AI dossier — extracted from the leak post

Exchange email servers
SQL databases
Business files
Customer records
Operational documentation

What the group claims

Upstate Glass Tempering 01. Keen attention to individualized customer service while simultaneously investing in the newest automated machinery has been the cornerstone of our brand. Additionally, our precision and attention to detail has earned Upstate Glass Tempering a reputation as the unchallenged destination for difficult custom projects 02. All of our machinery is European made, and our glass is sourced from North American manufacturers. 03. Upstate Glass Tempering has successfully launched the laminating branch of the company using our new Pujol laminating furnace from Barcelona, Spain. The laminated line focuses on high end custom laminated and tempered laminated product, using a variety of interlayers tailored to the needs of each client. Combined with our signature quality and service, Upstate Glass Tempering's laminating line will undoubtedly change the landscape of architectural glass in the industry. 04. Upstate Glass Tempering is proud to announce the addition of the FuseCube™ Express to our fabrication capabilities. The protective glass coating machine streamlines the application of Diamon-Fusion® glass treatment through a proprietary chemical vapor deposition process, ensuring double-sided coverage, uniform application, and a higher-quality coating.Geo: USA - Leak size: 95 GB Archive - Contains: Files, SQL, Exchange

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.

Is this your supplier? Your competitor? You?

Pro plans monitor your domain, corporate emails, and crypto wallets across every new ransomware leak-site post, breach dump and Telegram callout — alerts within 5 minutes.

Disclosure context

About Sarcoma

Sarcoma is a relatively new ransomware group that emerged in October 2024, operating with apparent financial motivations and demonstrating a broad international targeting approach with at least 140 documented victims across multiple countries and industry sectors. The group's origin and affiliations remain unclear due to its recent emergence, with no publicly documented connections to established ransomware families or confirmation of whether they operate as an independent entity or through a Ransomware-as-a-Service model. Limited public information is available regarding Sarcoma's specific attack methodologies, initial access vectors, or technical capabilities, though their targeting patterns suggest opportunistic rather than highly selective victim selection across diverse industries including manufacturing, business services, agriculture and food production, and technology sectors. The group has shown a particular focus on victims in the United States while also maintaining operations against targets in Italy, Canada, Germany, and Australia, though no specific high-profile attacks or record ransom demands have been publicly documented by major security firms or law enforcement agencies. Given the group's recent emergence in late 2024, Sarcoma appears to remain active with no reported law enforcement disruptions or confirmed rebranding activities at this time. The group has been linked to 150 public disclosures across our corpus. First observed on a leak site on October 9, 2024; most recent post May 12, 2026. The operation is currently active.

Also tracked as: Sarcoma Ransomware Group.

Timeline of this disclosure

February 10, 2025Upstate Glass Tempering listed by Sarcomaon the group's public leak site

Data size: 95 GB

Other recent disclosures by Sarcoma

Sarcoma has been linked to 150 public victims on Darkfield. A sample of the most recent:

See the full Sarcoma dossier →

Sector and geography

This disclosure adds to ransomware activity in the Manufacturing sector, which has 3,681 disclosures indexed across all operators we track. Geographically, Upstate Glass Tempering is reported in Spain, a country with 351 ransomware disclosures in our corpus.

If your organisation is affected

A listing by Sarcoma means Upstate Glass Tempering 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, INCIBE-CERT (Spain), as required for your jurisdiction.
Monitor for the data appearing on Sarcoma'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.