Was Polishing Proz hit by ransomware?

Polishing Proz was listed by the thegentlemen 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 thegentlemen ransomware group?

thegentlemen 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 Polishing Proz breach?

thegentlemen published data attributed to Polishing Proz. Darkfield captured the leak post and a screenshot of the listing.

Ransomware victim disclosure

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Polishing Proz

Claimed by Thegentlemen · listed 5 hours ago

Today

Age

since listed · data leaked

Status timeline

ListedOct 9, 2026
Data leakeddate unknown

At a glance

Group: Thegentlemen
Status: Data leaked
Country: United States
Listed on leak site: Oct 9, 2026

About the victim

AI dossier — public-source company profile

Polishing Proz LLC is a small, family-owned marble and natural stone care company based in Centennial, Colorado, founded around 2008–2012. The company specializes in marble crystallization, polishing, grinding, sealing, grout cleaning, and full restoration of marble, granite, travertine, limestone, and polished concrete for residential and commercial clients across the Denver metro area.

Industry: Stone Care & Restoration Services
Address: Centennial, Colorado (Denver metro), US
Employees: 3-6
Founded: 2010

Attack summary

Severity: low — No proof files or data samples published; no confirmed exfiltration or encryption stated; listing-only announcement with no operational impact or sensitive data categories identified.

The ransomware group claims to have accessed Polishing Proz but provides no detail of specific data exfiltrated or encryption activity. No proof files, screenshots, or data inventory are advertised in the leak post.

low

What the group claims

polishingproz.com zoominfo.com/c/polishing-proz-inc/409891680 Polishing Proz LLC is a small, family-owned marble and natural stone care company based in Centennial, Colorado (Denver metro), founded around 2008–2012 with 13+ years of experience. It generates estimated revenue of $200K–$500K/year with just ~3–6 employees, led by owner-founder James Medina. Core services include marble crystallization, polishing, grinding, sealing, grout cleaning, and full restoration of marble, granite, travertine, limestone, and polished concrete — for both residential and commercial clients. The company serves the greater Denver area with free estimates and a hands-on, owner-operated approach. It specializes in high-end restoration work such as marble fireplaces, countertops, staircases, and commercial floors. With minimal online presence and zero external funding, Polishing Proz competes against larger stone care franchises (ServPro, Stanley Steemer, local stone specialists) through reputation

Sources

Victim sitepolishingproz.com

Source

Indexed 5 hours 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 thegentlemen

thegentlemen is a ransomware group that emerged in September 2025, operating with apparent financial motivations based on their broad targeting of commercial sectors. The group has documented 267 victims across multiple countries, with primary focus on the United States, Thailand, France, Brazil, and India. Their targeting strategy demonstrates a preference for high-value sectors including manufacturing, technology, healthcare, and financial services organizations. Given the group's recent emergence and limited public documentation from established threat intelligence sources such as CISA, FBI, or major security research firms, specific details regarding their country of origin, operational structure, attack methodologies, encryption techniques, and whether they employ ransomware-as-a-service models remain unclear. The relatively high victim count of 267 in a short operational timeframe since September 2025 suggests either an aggressive campaign pace or potential inflation of victim numbers through affiliate operations, though without corroborating intelligence reports, the group's exact operational capabilities and notable campaigns cannot be definitively established. Current intelligence indicates the group remains active as of late 2025, though comprehensive threat profiling requires additional validated reporting from authoritative cybersecurity sources. The group has been linked to 960 public disclosures across our corpus. First observed on a leak site on September 9, 2025; most recent post October 9, 2026. The operation is currently active.

Also tracked as: the gentlemen.

Timeline of this disclosure

October 9, 2026Polishing Proz listed by thegentlemen on the group's public leak site

Other recent disclosures by thegentlemen

thegentlemen has been linked to 960 public victims on Darkfield. A sample of the most recent:

See the full thegentlemen dossier →

Sector and geography

Geographically, Polishing Proz is reported in United States, a country with 3,176 ransomware disclosures in our corpus.

If your organisation is affected

A listing by thegentlemen means Polishing Proz 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 thegentlemen'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.