Disclosure context

About brotherhood

The Brotherhood ransomware group is a recently emerged financially-motivated cybercriminal organization first observed in October 2025, representing one of the newer entrants in the ransomware landscape. Given the group's recent emergence and limited public documentation from major security firms and law enforcement agencies, detailed information about their origin, country of operation, and specific affiliations remains largely unknown to open-source intelligence. Based on observed targeting patterns, the group appears to employ opportunistic attack methodologies, focusing primarily on English-speaking markets including the United States, Australia, and Canada, while also targeting victims in Germany and Switzerland, suggesting either broad-spectrum initial access capabilities or acquisition of access through underground markets. Their victim selection spans multiple sectors including business services, construction, transportation and logistics, and technology companies, indicating a non-discriminatory approach typical of many financially-motivated ransomware operations rather than targeted campaigns against specific industries. With only 18 documented victims since their October 2025 emergence, Brotherhood represents a relatively small-scale operation compared to established ransomware groups, and specific details regarding their encryption methods, data exfiltration practices, or extortion tactics have not been publicly documented by major threat intelligence providers. The group remains active as of the latest available intelligence, though their limited operational footprint and recent emergence means comprehensive analysis of their tactics, techniques, and procedures awaits further documentation by security researchers and law enforcement agencies. The group has been linked to 18 public disclosures across our corpus. First observed on a leak site on October 10, 2025; most recent post January 6, 2026. The operation is currently active.

Timeline of this disclosure

November 15, 2025Ninas Jewellery listed by brotherhoodon the group's public leak site

Sector and geography

This disclosure adds to ransomware activity in the Consumer Services sector, which has 396 disclosures indexed across all operators we track. Geographically, Ninas Jewellery 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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Ninas Jewellery

Claimed by brotherhood · listed 6 months ago

Age

since listed · data leaked

Status timeline

Listed
Nov 15, 2025
Data leaked

At a glance

Group: brotherhood
Status: Data leaked
Country: Australia
Sector: Consumer Services
Listed on leak site: Nov 15, 2025

About the victim

AI dossier — public-source company profile

Nina's Jewellery is an Australian-owned fine jewellery retailer and designer founded in 1965 as Djaaru Gems in Kununurra, Western Australia. For over 60 years the company has specialised in natural coloured diamonds — including Argyle pink, blue, and champagne diamonds — as well as pearls and gold jewellery, sold online and through Western Australian showrooms. It is a family-oriented business known for handcrafted, exclusive diamond engagement rings and jewellery.

Industry: Luxury Goods & Jewelry
Address: Western Australia, Australia
Founded: 1965

Attack summary

Severity: high — Data has been confirmed published by the threat actor, indicating actual exfiltration and public release of company and likely customer data including PII from an e-commerce jewellery retailer with an online customer account system.

The Brotherhood ransomware group claims to have attacked Nina's Jewellery and has published data. No ransom amount or specific data volume was stated, but the disclosure status indicates data has been released.

high

Data the group says was taken

AI dossier — extracted from the leak post

Customer personal information
Customer account credentials
Order and purchase records
Business financial records
Internal company documents

Original description

AI-summarised, not from the leak post

Nina's Jewellery is a family-owned jewelry business with over 30 years of experience in the industry. Based in Australia, it offers a wide selection of fine jewelry featuring diamonds, colored gemstones, gold and pearls. Known for its exquisite craftsmanship and quality, Nina's Jewellery caters to customers seeking luxurious and timeless pieces for all occasions. With a strong commitment to ethical sourcing, the company ensures the sustainability and traceability in their supply chain.

Sources

Victim sitewww.ninasjewellery.com.au

Source

Indexed 6 months 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.