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Shelco Filters

Claimed by Securotrop · listed 1 day ago

1d
Age
since listed · data leaked

Status timeline

  1. ListedSep 12, 2026
  2. Data leakeddate unknown

At a glance

Group
Securotrop
Status
Data leaked
Country
United States
Sector
Manufacturing
Listed on leak site
Sep 12, 2026

About the victim

AI dossier — public-source company profile

Shelco Filters is a filtration manufacturer founded in 1973, based in Middletown, Connecticut. They design and produce high-performance filter cartridges and ASME-certified housing systems for industrial and commercial applications including water treatment, wastewater, and manufacturing processes.

Industry
Industrial Filtration Systems & Components
Address
100 Bradley Street, Middleville, CT 06457, US
Founded
1973

Attack summary

Severity: high — Confirmed exfiltration of 191 GB of data from a manufacturing company with published status indicates significant business data exposure; no specific details on regulated/sensitive data categories visible in excerpt, but volume and confirmation of publication elevates to high rather than medium.

The securotrop group claims to have exfiltrated 191 GB of data from Shelco Filters. The post indicates 'data_published' status, though the specific nature of the exfiltrated data is not detailed in the available leak post excerpt.

high

Data the group says was taken

AI dossier — extracted from the leak post
  • corporate data
  • business records

What the group claims

Status: AWAITING Size: 191 GB

Sources

Source

Indexed 1 day 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 securotrop

Securotrop is a relatively new ransomware group that emerged in July 2025 and operates with apparent financial motivations, having targeted at least 31 victims across multiple sectors. The group primarily targets English-speaking countries including the United States, Canada, and the United Kingdom, with their attacks focused heavily on manufacturing companies, business services firms, construction organizations, and telecommunications providers. Due to the group's recent emergence and limited public documentation from major cybersecurity agencies and researchers, specific details about their country of origin, operational structure, attack methodologies, and technical capabilities remain largely undocumented in open-source intelligence reports. The targeting pattern suggests a focus on critical infrastructure and industrial sectors that may be willing to pay ransoms to quickly restore operations, though no major high-profile attacks or record ransom demands have been publicly reported by established threat intelligence sources. Given the group's recent formation in mid-2025, Securotrop appears to remain active, though comprehensive analysis of their tactics, techniques, and procedures awaits further documentation by cybersecurity researchers and law enforcement agencies. The group has been linked to 43 public disclosures across our corpus. First observed on a leak site on July 22, 2025; most recent post September 12, 2026. The operation is currently active.

Timeline of this disclosure

  • September 12, 2026Shelco Filters listed by securotrop on the group's public leak site

Other recent disclosures by securotrop

securotrop has been linked to 43 public victims on Darkfield. A sample of the most recent:

See the full securotrop dossier →

Sector and geography

This disclosure adds to ransomware activity in the Manufacturing sector, which has 3,696 disclosures indexed across all operators we track. Geographically, Shelco Filters is reported in United States, a country with 3,165 ransomware disclosures in our corpus.

If your organisation is affected

A listing by securotrop means Shelco Filters 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 securotrop'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.