Disclosure context

About cyclops

Cyclops is a relatively minor ransomware group that emerged in July 2023, operating with apparent financial motivations and maintaining a low profile compared to established ransomware families. The group's origin and affiliations remain largely undocumented in public threat intelligence reporting, with limited information available regarding their operational structure or potential ties to other cybercriminal organizations. Based on available data, Cyclops has demonstrated geographically diverse targeting patterns, with documented victims spanning Australia, China, and Guatemala, though their specific attack methodologies, initial access vectors, and encryption techniques have not been extensively analyzed or reported by major security firms or law enforcement agencies. With only seven known victims documented since their emergence, the group represents a relatively small-scale operation that has not conducted any widely publicized high-profile attacks or drawn significant attention from cybersecurity researchers or law enforcement disruption efforts. Current intelligence suggests the group remains active but operates at a scale significantly below major ransomware families that typically dominate threat landscape reporting. The group has been linked to 7 public disclosures across our corpus. First observed on a leak site on July 1, 2023; most recent post July 26, 2023. The operation is currently inactive.

Timeline of this disclosure

July 1, 2023Atherfield Medical Service listed by cyclopson the group's public leak site

Sector and geography

This disclosure adds to ransomware activity in the Healthcare sector, which has 1,779 disclosures indexed across all operators we track. Geographically, Atherfield Medical Service is reported in Australia, a country with 368 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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Atherfield Medical Service

Claimed by cyclops · listed 3 years ago

35m

Age

since listed · data leaked

Status timeline

Listed
Jul 1, 2023
Data leaked

At a glance

Group: cyclops
Status: Data leaked
Country: Australia
Sector: Healthcare
Listed on leak site: Jul 1, 2023

About the victim

AI dossier — public-source company profile

Atherfield Medical Service is an accredited general practice that has been providing healthcare in the Yass region of New South Wales, Australia, for over 100 years. The practice operates under the banner of Atherfield Medical and Skin Cancer Clinic, offering general practitioner and skin cancer clinic services to the local community.

Industry: General Practice & Primary Healthcare
Address: Yass region, New South Wales, Australia

Attack summary

Severity: critical — Data has been published (disclosed status: data_published) and the victim is a healthcare provider; exfiltrated data almost certainly contains regulated sensitive patient medical records and PII at scale, consistent with critical severity.

The Cyclops ransomware group claims to have exfiltrated data from Atherfield Medical Service and has published a download link to a ZIP archive purportedly containing the stolen data, with no ransom amount stated.

critical

Data the group says was taken

AI dossier — extracted from the leak post

Patient medical records
General practice clinical data
Skin cancer clinic records
Potentially identifiable patient information (PII)

The group's post references roughly 1 proof file.

What the group claims

Hospitals & Physicians Clinics · AustraliaAtherfield Medical Service has been providing health care in the Yass region for over 100 years. They are an accredited general practice.Data:===========https://anonfiles.com/E5o3h8z2z4/Atherfield_Medical_and_Skin_Cancer_Clinic_Data_zip

Source

Indexed 3 years 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.