Was Openmind networks hit by ransomware?

Openmind networks was listed by the coinbasecartel ransomware operation (United Kingdom), 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 coinbasecartel ransomware group?

coinbasecartel 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 Openmind networks breach?

coinbasecartel published data attributed to Openmind networks (~43 GB). Darkfield captured the leak post and a screenshot of the listing.

Ransomware victim disclosure

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Openmind networks

Claimed by Coinbasecartel · listed 3 months ago

43 GB

Data size

Age

since listed · data leaked

Status timeline

ListedMay 30, 2026
Data leakeddate unknown

At a glance

Group: Coinbasecartel
Status: Data leaked
Country: United Kingdom
Sector: Technology
Listed on leak site: May 30, 2026
Data size: 43 GB

About the victim

AI dossier — public-source company profile

Openmind Networks is a UK-based provider of messaging network software solutions, including SMSC, MMSC, RCS, CPaaS, and fraud prevention platforms for mobile network operators, intercarriers, and aggregators. They offer AI-powered messaging infrastructure, smishing detection, and intelligent routing services.

Industry: Telecommunications Software & Messaging Infrastructure

Attack summary

Severity: low — No disclosed information, proof files, or specifics provided by the threat actor. Post is announcement/threat only with no evidence of breach or data exfiltration. Cannot corroborate claims.

The coinbasecartel group claims to have conducted an attack on Openmind Networks with a vague threat ('catastrophic if you choose to ignore us'), but has published no technical details, proof files, or specifics about what data was exfiltrated or systems compromised.

low

Original description

AI-summarised, not from the leak post

Openmind Networks is an Irish telecommunications software company specializing in signaling and messaging solutions for mobile network operators. Founded in Dublin, Ireland, the company develops products for SS7, Diameter, and SMS firewall technologies, helping carriers manage and secure signaling traffic. Their solutions address roaming, fraud prevention, and network interoperability, serving telecom operators globally while maintaining headquarters in Ireland.

The leak post

captured from the group's site

Sample for Grafana is up also Cambridge Mobile Telematics,Demand.io, Openmind networks usually when you get breached you rotate your keys, and you have not, so we took more:) Get back to us soon.
Our SimpleX chat ID has changed. Please add us on https://smp5.simplex.im/a#bAEa5tPvMugwBWZdcOYnj_gBicRCy3HLz2A7oC6KjF0
— We are looking for new partners/insiders. Send us a message to dicuss
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Sample for Grafana is up also Cambridge Mobile Telematics,Demand.io, Openmind networks usually when you get breached you rotate your keys, and you have not, so we took more:) Get back to us soon.
Our SimpleX chat ID has changed. Please add us on https://smp5.simplex.im/a#bAEa5tPvMugwBWZdcOYnj_gBicRCy3HLz2A7oC6KjF0

Sources

Victim siteopenmindnetworks.com
Leak posthttp://fjg4zi4opkxkvdz7mvwp7h6goe4tcby3hhkrz43pht4j3vakhy75znyd.onion/companies/openmind

Source

Indexed 3 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.

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Disclosure context

About coinbasecartel

CoinbaseCartel is a ransomware group that emerged in September 2025 with financially motivated operations targeting organizations across multiple sectors and geographic regions. The group has demonstrated significant activity in a short timeframe, compromising at least 102 known victims primarily across the United States, United Arab Emirates, Germany, Canada, and Brazil. Their targeting patterns show a preference for technology companies, financial services organizations, manufacturing entities, and consumer services businesses, suggesting an opportunistic approach focused on organizations likely to have both valuable data and the financial resources to pay ransoms. Given the group's recent emergence and limited public documentation from established threat intelligence sources, details regarding their specific attack methodologies, infrastructure, and organizational structure remain largely unconfirmed by major cybersecurity firms or law enforcement agencies. The group appears to maintain active operations as of late 2025, though comprehensive analysis of their tactics, techniques, and procedures awaits further investigation and reporting by established threat intelligence organizations. The group has been linked to 219 public disclosures across our corpus. First observed on a leak site on September 15, 2025; most recent post August 23, 2026. The operation is currently active.

Also tracked as: coinbase cartel.

Timeline of this disclosure

May 30, 2026Openmind networks listed by coinbasecartelon the group's public leak site

Data size: 43 GB

Other recent disclosures by coinbasecartel

coinbasecartel has been linked to 219 public victims on Darkfield. A sample of the most recent:

See the full coinbasecartel dossier →

Sector and geography

This disclosure adds to ransomware activity in the Technology sector, which has 3,573 disclosures indexed across all operators we track. Geographically, Openmind networks is reported in United Kingdom, a country with 377 ransomware disclosures in our corpus.

If your organisation is affected

A listing by coinbasecartel means Openmind networks 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, NCSC (United Kingdom), as required for your jurisdiction.
Monitor for the data appearing on coinbasecartel'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.