Disclosure context

About medusalocker

MedusaLocker is a ransomware group that emerged in November 2022, operating with primarily financial motivations and targeting organizations across multiple sectors including technology, energy, healthcare, and manufacturing. The group's origin and specific affiliations remain largely undocumented in public threat intelligence reports, though their operational patterns suggest they may operate as part of the broader ransomware-as-a-service ecosystem that has proliferated in recent years. With 51 documented victims primarily concentrated in the United States, United Arab Emirates, Germany, Canada, and Antigua and Barbuda, MedusaLocker appears to focus on opportunistic targeting rather than specific geographic or sectoral specialization. The group's attack methodology and specific technical capabilities have not been extensively documented by major threat intelligence organizations, though their targeting of critical infrastructure sectors including healthcare and energy suggests they likely employ common ransomware tactics such as network encryption and potential data exfiltration. No major high-profile attacks or significant law enforcement disruptions against MedusaLocker have been publicly reported by CISA, FBI, or other major security agencies. The current operational status of MedusaLocker remains unclear due to limited public documentation, though the relatively recent emergence date suggests the group may still be active or have transitioned to other operations. The group has been linked to 67 public disclosures across our corpus. First observed on a leak site on November 15, 2022; most recent post May 5, 2026. The operation is currently active.

Timeline of this disclosure

May 5, 2026Raycolighting listed by medusalockeron the group's public leak site

Sector and geography

This disclosure adds to ransomware activity in the Manufacturing sector, which has 2,458 disclosures indexed across all operators we track. Geographically, Raycolighting is reported in GB, a country with 309 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

← All victims

Raycolighting

Claimed by medusalocker · listed 15 days ago

15d

Age

since listed · data leaked

Status timeline

Listed
May 5, 2026
Data leaked

At a glance

Group: medusalocker
Status: Data leaked
Country: GB
Sector: Manufacturing
Listed on leak site: May 5, 2026

About the victim

AI dossier — public-source company profile

Rayco Lighting (raycolighting.com) is a wholesaler of lighting and LED equipment based in Great Britain, serving commercial, residential, and industrial markets. The company offers a broad product catalogue including ceiling fixtures, track lighting, linear LED systems, outdoor lighting, and related components. It positions itself as a supplier for both new construction and retrofit/upgrade projects.

Industry: Lighting & LED Equipment Wholesale

Attack summary

Severity: low — The only confirmed disclosed data is 2 email addresses; there is no evidence of large-scale PII exfiltration, regulated data exposure, financial/medical records, or operational disruption. The post is minimal with negligible proof.

The MedusaLocker group claims to have compromised Rayco Lighting and published data, with the disclosed material consisting of at least 2 extracted email addresses from the organisation's domain. No ransom amount or data volume was stated.

low

Data the group says was taken

AI dossier — extracted from the leak post

Email addresses (2 extracted)

The group's post references roughly 1 proof file.

What the group claims

Organization with 2 emails extracted. Domain: raycolighting.com

The leak post

captured from the group's site

File Manager File Manager home page BARAAAI Data is being prepared for publication. BAPAMAI Data is being prepared for publication. BAUARAI Data is being prepared for publication. BAVADAI Data is being prepared for publication. BAVACAI Data is being prepared for publication. BAVAQAI Data is being prepared for publication. Raycolighting DEMO 3137 S Alameda Street, Los Angeles, CA 90058, USA $10 000 Organization with 2 emails extracted. Domain: raycolighting.com baralai Data is being prepared for publication. CEAGESP / Netfeirasp DEMO São Paulo, Brazil $20 000 Brazilian produce wholesale market network. Domain netfeirasp.ceagesp (CEAGESP). Also demarchibrasil.com.br accounts. Colegio María Inmaculada (CMI) DEMO Moravia, San José, Costa Rica $50000 Catholic school in Moravia, Costa Rica. Domain cmi.local / mariainmaculada.ed.cr. Servers: CMI-DC01, CMI-APP, CMI-HTTP2, main-server1/2. Académie de Montpellier / CSJM DEMO Béziers, Occitanie, France $15000 French public school network. Domain CSJM.BEZIERS, part of Académie de Montpellier (ac-montpellier.fr). Occitanie region (laregion.fr). Teacher and admin staff credentials. Palmers Relocations DEMO Victoria, Australia $63 000 Australian …

Sources

Victim siteraycolighting.com
Leak posthttp://t33zoj4qwv455fog7qnb2azi5xcdxkixughmmduzbw2rtdgryqfbh6id.onion/company/raycolighting/

Source

Indexed 15 days 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.