The Gentlemen ransomware dumps 34 victims in under 21 hours

October 6, 2026, 21:55 UTC. The ransomware group The Gentlemen posts the first victim of the batch, Greenbrook Engineering. October 7, 2026, 18:20 UTC. The count reaches 34 victims. October 9, 2026. Deloitte, with over $74 billion in revenue, appears on the group’s leak site. Why it matters: publishing one victim every four minutes for 80 minutes is not negotiation — it is the signature of an automated exfiltration pipeline, and it resets the clock on incident response.

A blitz of 34 victims in 20 and a half hours

The numbers come from Ransom-DB, which keeps continuous telemetry on leak sites. Between October 6 at 21:55 UTC and October 7 at 18:20 UTC — 20 hours and 25 minutes — The Gentlemen added 34 organizations to its publication directory. The geography shows the blast radius: 17 victims in the United States (50%), 4 in Canada (11.8%), then 2 in France, 2 in India and 2 in Taiwan, with the remainder spread across Argentina, Australia, the Czech Republic, Denmark, Israel, Oman and Spain.

The cadence peak is the most instructive part. Between 00:18 and 01:38 UTC on October 7, the group published 20 victims — roughly one every four minutes. No human operator types, verifies and uploads twenty dossiers at that pace in the middle of the night. Ransom-DB says it plainly: the density points to automated orchestration in the leak platform’s backend, or a bulk dump engineered to overwhelm incident responders and open-source monitors.

The victim profile tells the same story as the cadence. It runs from neighborhood medical practices and rural school districts to multinational precision manufacturers and a South American natural-gas operator. The group hits the access layer — VPNs, firewalls, remote gateways — then works with whatever it finds inside, with no sectoral restraint.

The automated pipeline behind the cadence

The strongest hypothesis, backed by historical telemetry, is that an automated exfiltration pipeline now replaces interactive, per-target publication. Operators appear to have queued batches of records and released them in a burst. The effect is threefold: swamp IR teams, drown OSINT monitors, and inflict simultaneous reputational damage on every affected entity.

That mechanic breaks a core assumption of incident response. The classic scenario — attack, encryption, then negotiation stretched over weeks before any publication — gives way to a model where stolen data is packaged and published at industrial speed the moment initial demands are ignored. An organization that discovers a compromise now has less time, not more, to size up the exfiltration before it goes public.

The initial-access indicators documented by Ransom-DB confirm the group reinvents nothing: CVE-2024-3400 (command injection in Palo Alto GlobalProtect VPN) and CVE-2023-4966 (Citrix session hijacking, “Citrix Bleed”) are among its most exploited entry points, supplemented by purchased, valid administrative accounts. For exfiltration, operators use Rclone scripts pushing encrypted archives to consumer cloud storage such as Mega and Wasabi (technique T1567.002), ahead of final encryption (T1486).

Who falls: healthcare, education, energy

The victim list shows “zero operational restraint” toward sensitive sectors, in Ransom-DB’s wording. In healthcare: North Philadelphia Health System, MercyMed of Columbus, All Smiles Dental of Falls Church and Potomac Animal Hospital — organizations where downtime has direct patient-care consequences, not to mention potential HIPAA penalties. In education: Northwestern Polytechnic (Canada), the University of Buraimi (Oman), All Souls St Gabriels School (Australia), and public school districts in Ansonia and Santee in the United States.

The heaviest case is in energy. Transportadora de Gas del Norte (TGN), one of Argentina’s main natural-gas transport networks, is in the batch — proof the group does not stop at the mid-market and can reach critical infrastructure. Manufacturing rounds out the picture with precision targets: Jentech Precision Industrial and Ability Enterprise in Taiwan, Galil Engineering in Israel, Refako Autodele in Denmark, and Kooltronic in the United States.

The Gentlemen is no newcomer. The group has been tracked since September 9, 2025, and Ransomnews counts more than 1,000 claimed victims over its full lifecycle. The October blitz is not a trial run — it is a deliberate ramp-up by an operation that is already industrialized.

The pattern is not random. Healthcare and education are deliberately soft targets — fragmented security teams, decentralized IT, and an outsized incentive to pay when patient care or classes hang in the balance. Energy and manufacturing, by contrast, signal an appetite for intellectual property and operational technology, not just fast payouts. That the same group shifts between both registers inside a single 21-hour window is itself the warning: a defense tuned for only one kind of victim misses the other.

Deloitte and the end of “it only happens to others”

Two days after the blitz, on October 9, 2026, the CTIWatch database recorded Deloitte being added to the group’s leak site, in a campaign attributed to The Gentlemen. The listing is sourced from RansomLook and carries the same caveat as every entry of its kind: presence on a leak site is a claim, not proof of a confirmed breach. Deloitte has not commented publicly, and no exfiltration details were published as of this writing.

The event still matters for a reason that does not depend on confirmation. A professional-services firm of that size concentrates client data, audit documents and financial information, making it a first-order extortion target — and its appearance on a leak list is a reminder that the line between “mid-sized victim” and “household name” no longer exists in RaaS campaigns. The Gentlemen operates as a financially motivated ransomware-as-a-service, using exfiltration and the threat of public disclosure as its primary lever.

Verdict

The recommendation fits in one line: treat automated disclosure as a fact, not a possibility. Concretely, three workstreams dominate.

If your remote access surface runs on aging appliances, start there: the group enters through known perimeter flaws (CVE-2024-3400, CVE-2023-4966) and purchased valid accounts. Patch VPN gateways and edge devices, and enforce phishing-resistant authentication — FIDO2 or number-matching — wherever a legitimate session can be stolen.

If you lack immutable, offline backups, that is priority two. A copy the attacker can also encrypt is not a copy: isolate it from the domain, out of band, with unalterable versions. If you lack visibility into exfiltration, fix it before the incident: watch for abnormal outbound flows to consumer cloud storage — the group’s Rclone vector — and segment so that compromising one entity does not hand over the entire directory.

The deeper lesson is simpler still. When a group can publish 20 victims in 80 minutes, the time advantage shifts to the attacker. The only defense is to have already shrunk the surface, already isolated the backups and already mapped the flows before the first envelope is opened.

References

• Ransom-DB — The Gentlemen Ransomware Surge: 34 Victims Disclosed in Rapid 21-Hour Blitz
• CTIWatch — Deloitte, the gentlemen ransomware attack (October 2026)
• Ransomnews — The Gentlemen ransomware group: victims, status, activity
• Undercode News — The Gentlemen Ransomware Group Reportedly Lists 10 New Victims (October 12, 2026)