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 176 public disclosures across our corpus. First observed on a leak site on September 15, 2025; most recent post May 16, 2026. The operation is currently active.

Also tracked as: coinbase cartel.

Timeline of this disclosure

May 15, 2026Flash Charm INC (IDERA) listed by coinbasecartelon the group's public leak site

Sector and geography

This disclosure adds to ransomware activity in the Technology sector, which has 2,524 disclosures indexed across all operators we track.

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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IDERA

listed as Flash Charm INC (IDERA) · Claimed by coinbasecartel · listed 6 days ago

Age

since listed · listed for ransom

Status timeline

Listed
May 15, 2026

Current state: Listed for ransom

At a glance

Group: coinbasecartel
Status: Listed for ransom
Sector: Technology
Listed on leak site: May 15, 2026

About the victim

AI dossier — public-source company profile

IDERA is a software company known for developing database management, DevOps, and IT administration tools used by enterprises globally. The victim name 'Flash Charm INC' appears to be a legal or holding entity associated with IDERA. IDERA's products serve technology and infrastructure-heavy industries.

Industry: Enterprise Software & Database Tools

Attack summary

Severity: critical — The group claims exfiltration of highly sensitive operational technology (OT) data including DCS controller logic and shutdown sequences for energy infrastructure, combined with credential compromise at scale and claimed operational disruption (field workers locked out), representing a critical threat to critical infrastructure safety and operations.

The group claims to have maintained persistent access to the victim's network for approximately three weeks, exfiltrating sensitive engineering data including Navisworks 3D models, P&ID diagrams, Honeywell DCS controller logic, and energy plant operational data; they also claim to have locked out field workers, suggesting operational disruption.

critical

Data the group says was taken

AI dossier — extracted from the leak post

Navisworks 3D models
P&ID diagrams
Maintenance logic for energy plants
Honeywell DCS controller logic
Shutdown sequences and pressure point data
Corporate VPN credentials
Over 100 corporate identities
Internal network protocols

The leak post

captured from the group's site

We have changed our contact method. We now exclusively use qTox Messenger for all communications. SimpleX and Session have been discontinued. Our Tox ID: A7580331D4D16453CCE86D7ADFBCF0CEED0D0D1AEA8F4DBEEBCA9E3B46308F260DE9B41BD838
You may have noticed the sudden, heavy silence. The corporate VPNs are dead. We have been the silent architects of your network for the past three weeks. While your "elite" investigators from Mandiant sat in your logs, we sat directly beside them burning through over a hundred of your corporate identities like disposable tools. we have had your entire network and internal protocols. HOW LONG WILL YOU KEEP YOUR THOUSANDS OF FIELD WORKERS LOCKED OUT? We have successfully exfiltrated the most sensitive engineering data held by any firm in your sectors We hold the complete Navisworks 3D models, P&ID diagrams, and maintenance logic for your major energy plants. This includes the granular Honeywell DCS controller logic. We know the flow, the pressure points, and the shutdown sequences of your clients' billion-dollar assets. We have completed our audit. Now, the choice belongs to the APTIM Executive Leadership and your partners at Hunt LNG. Currently, your compa…

Sources

Leak posthttp://fjg4zi4opkxkvdz7mvwp7h6goe4tcby3hhkrz43pht4j3vakhy75znyd.onion

Source

Indexed 6 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.