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Threat actor

The Gentlemen

3 mentions in 7 days · 8 in 30 days · 9 total · first seen · last

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ShinyHunters expose 6.4M in attack on medical supplier McKesson

ShinyHunters leaked stolen McKesson data exposing roughly 6.4 million individuals after the medical supplier reportedly declined a $55.2 million extortion demand.

Have I Been Pwned added records leaked by ShinyHunters from medical and pharmaceutical supply company McKesson, confirming the August 2026 attack affected about 6.4 million people. Exposed data includes names, email and physical addresses, dates of birth, phone numbers, employer details, and sensitive health information; ShinyHunters claimed SSNs and 284 million documents were taken, though HIBP found no SSNs. The group issued a $55.2 million extortion demand that was apparently unpaid before publication. The article also notes Boston Scientific expects to miss Q3 guidance after its own attack, and that Veradigm disclosed attackers used third-party vendor credentials to access an API and steal roughly 3.5 million patient records claimed by ransomware group The Gentlemen.

The Register · Security · 5d agoData breach 4 sources

Electronic health record company says customer data stolen in breach

Veradigm disclosed that attackers used stolen vendor credentials via an API to steal patient data including Social Security numbers, as the Gentlemen ransomware gang claims 3.5 million patients' records.

Electronic health records company Veradigm filed an 8-K with the SEC stating that an unauthorized party obtained credentials from a vendor's environment and used them to access a Veradigm API, downloading patients' personal data including Social Security numbers; no clinical or medical data was involved. The Gentlemen ransomware gang added Veradigm to its leak site, claiming theft of 3.5 million patients' health records. Access was limited to the specific API interface, with no operational disruption. Veradigm was previously hit by SamSam ransomware in 2019 and disclosed a December 2024 breach affecting 2,672,036 people.

The Recordupdated · 5d agofirst · 6d agoData breach in the wild 4 sources

Veradigm warns of patient data breach after ransomware gang claims attack

Healthcare vendor Veradigm disclosed a patient data breach via a third-party vendor's credentials, which the Gentlemen ransomware gang claims involved 3.5 million records.

Veradigm, formerly Allscripts, told the SEC that an attacker used compromised credentials from a third-party vendor to access a customer-service API and copy patient data, including personal details and Social Security numbers, without touching clinical data or the broader network. The Gentlemen ransomware group listed Veradigm on its leak site claiming 3.5 million patient records and threatened to publish the data by September 11 unless ransom negotiations start. The gang, active since mid-2025, runs double extortion across Windows, Linux, NAS, BSD and ESXi, lists 800+ victims in 86 countries, and has been linked to a SystemBC proxy botnet and the GentleKiller EDR killer. Veradigm is notifying affected individuals, offering credit monitoring, and says it does not expect a material business impact.

BleepingComputerupdated · 5d agofirst · 6d agoData breach 4 sources

ThreatsDay: CEO Phishing Kits, 5K Dropbox Account Hacks, OAuth Traps + 17 More Stories

Microsoft warns of Teams IT-impersonation intrusions deploying Node.js implants; Spring Ring vishing hit 150+ employees across 10 companies; The Gentlemen ransomware claims 683 victims.

Microsoft warned of a human-operated campaign abusing Teams external collaboration to impersonate IT help desk staff, deploy malicious MSI packages staging Node.js runtimes and obfuscated JavaScript implants, then pivot to domain controllers over WinRM. Unit 42 documented the Spring Ring vishing operation targeting over 150 employees across at least 10 companies using 26 attacker identities, including an NTLM relay variant against domain controllers. Sophos reported The Gentlemen ransomware (Gold Sherwood) reached 683 total victims by end of July 2026, adding 169 in July, with a playbook using BYOVD-based EDR killers and backup tampering. Group-IB found the Outsider phishing-as-a-service platform created 700+ new phishing pages within a month despite law enforcement takedowns.

The Hacker News · 12d agoThreat actor in the wild1

Nutex Health Says Patient Data Stolen, Hackers Threaten Leak

The Gentlemen ransomware gang claims breach of US healthcare provider Nutex Health, exfiltrating patient and employee data and threatening publication.

Nutex Health disclosed in an SEC 8-K filing that an unauthorized third party accessed and exfiltrated patient, employee, credentialed provider, business, and financial data from company servers, and threatened to publish it. The Gentlemen ransomware group listed Nutex on its leak site; a class action was filed August 27 and Edelson Lechtzin LLP is separately investigating. Nutex operates over 27 facilities in 12 states and served nearly 100,000 patients in the first half of 2026, with no material operational impact identified so far.

Infosecurity Magazine · 13d agoRansomware

Healthcare facilities operator Nutex says patient, employee data stolen in August incident

The Gentlemen ransomware gang claims the theft of patient and employee data from healthcare operator Nutex Health, which disclosed the extortion in SEC filings.

Nutex Health said in an 8-K filing that intruders broke into its servers and exfiltrated patient, employee, provider and confidential financial data, and that it is being extorted with threats to publish the information. A Texas class action was filed after the company's August 24 disclosure, and Nutex cannot yet estimate the incident's impact. The Gentlemen ransomware-as-a-service gang, active since September 2025 and believed Russia-based, listed Nutex on its leak site; Dragos ranked it third among groups attacking industrial organizations in Q2 2026 with 125 claimed attacks.

The Record · 14d agoRansomware

Threat Actors Don’t Want Better Attacks. They Want Repeatable Ones

Opinion piece argues attackers prioritize repeatable playbooks like ClickFix (47% of Microsoft-notified attacks) and living-off-the-land over novel techniques.

The column analyzes why commodity techniques scale: Microsoft observed ClickFix as the top initial access method at 47% of its notifications last year, while Bitdefender found 84% of 700,000 analyzed high-severity incidents involved binaries already present on machines. Verizon's DBIR shows vulnerability exploitation rising to 31% of initial access vectors, up from 20%, and ransomware leak-site rankings show Qilin (roughly 1,600 claimed victims) and The Gentlemen (121 claimed victims in June) competing on throughput. The author argues attackers behave like a generics business, standardizing repeatable procedures rather than investing in novel tradecraft.

The Hacker News · 14d agoIndustry

Attackers turn to AI for help identifying files worth stealing

Gambit Security documents three threat actors using AI: a ransomware operator with Claude Code, credential harvester Zerofot, and the AI-built RAGE cryptomining framework.

Gambit Security examined three unrelated threat actors using AI across different stages of intrusions. A suspected operator tied to The Gentlemen ransomware-as-a-service used Claude Code running Claude Sonnet 4.6 in late June 2026 at six organizations, including an Australian energy utility, where it ran reconnaissance, ranked valuable databases, staged SQL Server dumps for exfiltration, and modified firewall configurations, accidentally taking one utility firewall offline. The Zerofot credential-harvesting operation, built with OpenAI Codex and Claude Code, collected 2,975 validated credentials from 1,742 hosts between April 5 and May 23, 2026, including SSH private keys and AWS access keys. The AI-generated RAGE Python framework exploits exposed Redis, Elasticsearch, Docker, Tomcat, and other services to harvest credentials and deploy cryptominers, guided at runtime by a DeepSeek-backed AI Orchestrator.

Help Net Security · 28d agoThreat actor in the wild1

Ransomware group hijacks hospital system’s Facebook page amid ongoing cyberattack fallout

'The Gentlemen' ransomware group hijacked AnMed's Facebook page, claiming theft of 6TB of sensitive patient data during an ongoing cyberattack on the hospital system.

AnMed, a nonprofit medical system with four hospitals in Georgia and South Carolina, is still responding to a July 26 cyberattack involving malware, with 10 facilities remaining closed as of Monday. On Tuesday its Facebook page displayed unauthorized posts claiming 'The Gentlemen' ransomware group exfiltrated 6 terabytes of data, including records on sexual assault, mental health, abortions and harassment; AnMed said the claims are unverified and patient data impact has not been confirmed. The Gentlemen, believed founded by a former Qilin affiliate using the moniker 'hastalamuerte,' extorted 332 victims in the first five months of 2026 per CheckPoint and claimed 125 industrial attacks in Q2 2026 per Dragos. The group typically breaches networks through edge devices, credential brute-forcing and known vulnerabilities, and offers affiliates tools to disable EDR.

The Record · Aug 11, 2026Ransomware in the wild

Appears with

organization SEC 4threat actor Qilin 3victim Veradigm 3vendor Veradigm 3victim McKesson 2threat actor ShinyHunters 2victim Nutex Health 2vendor McKesson 2organization Nutex Health 2vendor Microsoft 2vendor Dragos 2victim AnMed 2organization Check Point 1organization Boston Scientific 1malware BlueKit 1organization Anthropic 1
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