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McKesson

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ShinyHunters expose 6.4M in attack on medical supplier McKesson

Have I Been Pwned data shows ShinyHunters' attack on medical supplier McKesson exposed records of roughly 6.4 million individuals.

Have I Been Pwned added data from the McKesson breach, revealing that last month's cyberattack at the medical and pharmaceutical supply company affected roughly 6.4 million individuals. The extortion group ShinyHunters initially claimed to have stolen 284 million documents from McKesson. HIBP's addition of the ShinyHunters-leaked data is the first public indication of the attack's true scale.

DataBreaches.net · 5d agoData breach in the wild

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

Week in review: Claude accounts compromised through infostealer, Patch Tuesday forecast

Help Net Security week-in-review roundup: Claude infostealer lockouts, record Patch Tuesday, McKesson breach, SonicWall zero-days, PaperCut attacks.

This Help Net Security weekly roundup aggregates prior stories: Anthropic locking out Claude users after infostealer-compromised login sessions, August 2026 Patch Tuesday's 398 resolved CVEs, ShinyHunters' claim of 284 million stolen patient records from McKesson, active exploitation of SonicWall SMA 1000 zero-days (CVE-2026-83548/83549), Sangoma Switchvox SQL injection exploitation (CVE-2026-9586), and attackers planting RATs on compromised PaperCut servers. It also covers FBI OAuth phishing warnings, a Spring Ring vishing campaign abusing Microsoft Teams, and a fake Claude Opus 5 GitHub repo delivering RevStealer infostealer.

Help Net Security · 10d agoOther in the wildCVE-2026-62911CVE-2026-83548CVE-2026-83549+1 CVEs1

The story behind the intelligence

Cisco Talos newsletter features adversary-engagement podcast, flags AI guardrail 'safety penalty' slowing defenders, and recaps McKesson breach and PaperCut patching headlines.

The Threat Source newsletter spotlights the Beers with Talos podcast, in which researcher Azim Khodjibaev describes maintaining eight dark-web personas to identify prolific cybercriminals and support disruption efforts. Talos also argues frontier AI guardrails impose an AI 'safety penalty', citing a July 2026 incident where Hugging Face's primary cloud LLM refused to analyze forensic breach data and delayed response. Recapped headlines include ShinyHunters claiming theft of 284 million patient records from McKesson via vishing and Okta account takeover, Anthropic warning Claude users about infostealer malware, and PaperCut issuing emergency patches for chained vulnerabilities.

Cisco Talos · 12d agoIndustry

Health data of more than 9.5 million people leaked from Aesto record system

Health data firm Aesto reported a breach affecting over 9.5 million people after hackers accessed its AWS infrastructure between December 2 and 18.

Alabama-based healthcare data company Aesto notified the Department of Health and Human Services that more than 9.5 million people had sensitive information leaked in a December cyberattack, after previously warning customers in June without disclosing scope. Attackers broke into the company's Amazon Web Services infrastructure between December 2 and December 18, stealing names, Social Security numbers, medical information, driver's license numbers, financial account numbers, and health insurance data. Aesto provides data migration and archiving services for medical facilities, and at least 30 healthcare organizations were affected, with breach notices filed for customers including Together Women's Health. Related healthcare incidents disclosed this year include Baylor Genetics (2.8 million people), CareCloud (3.7 million), and recent attacks at McKesson, Nutex, Paylogix, and Park Dental Partners.

The Record · 13d agoData breach

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 Giant McKesson Investigates Data Breach Incident

ShinyHunters claims theft of 284 million records from healthcare giant McKesson, which says it is investigating the alleged breach.

ShinyHunters claims it stole 284 million records from McKesson, one of the largest healthcare distribution companies. McKesson confirmed it is investigating a data breach incident. The claimed scale of the theft has not yet been independently verified, and extortion activity is implied by the actor's involvement.

Infosecurity Magazine · 14d agoData breach

Healthcare cyberattacks hit pacemakers and millions of patient records

McKesson confirms a data breach as ShinyHunters demands $55.2M amid healthcare cyberattacks affecting millions of patient records and pacemaker devices.

McKesson, one of the largest US healthcare distribution companies, has admitted a data breach. The ShinyHunters group is demanding a $55.2M extortion payment. The Register reports broader healthcare cyberattacks tied to the story, affecting millions of patient records and involving medical devices such as pacemakers. Details on the exact number of compromised records have not been confirmed.

The Register · Security · 15d agoData breach in the wild

McKesson copes with fallout from data theft extortion attack

McKesson discloses a data theft extortion attack by ShinyHunters affecting oncology and medical-surgical customers, with a reported $55 million demand.

McKesson disclosed that attackers gained access to some of its third-party applications and stole data associated with a subset of customers in its oncology, multispecialty, and medical-surgical business units; the intrusion ran for four days from August 21 and was discovered August 25. ShinyHunters claimed responsibility and listed McKesson on its data-leak site, reportedly demanding more than $55 million with a September 1 deadline. Flashpoint analysts say the group typically uses social engineering and identity weaknesses with valid credentials to access cloud-hosted environments, making the intrusion hard to detect. McKesson, which distributes about one-third of pharmaceuticals used in North America with $403.4 billion in annual revenue, says operations continue and it has reasonable assurance of no ongoing unauthorized activity.

CyberScoop · 15d agoData breach in the wild

Hackers claim millions of patient records stolen during data breach at healthcare giant McKesson

Hackers claim theft of millions of patient records from US healthcare distributor McKesson, which confirmed a hack and expects service degradation.

McKesson, which distributes medicines and medical devices to hospitals and healthcare practices across the US, said it was hacked. Threat actors claim millions of patient records were stolen in the breach. The company said it expects intermittent service degradation as it responds to the incident.

TechCrunch · Security · 15d agoData breach in the wild

McKesson confirms cyber incident after ShinyHunters claims patient-data theft

Healthcare giant McKesson confirmed a cyber incident after ShinyHunters claimed theft of hundreds of millions of patient records.

McKesson acknowledged a data breach following public claims by the threat actor group ShinyHunters that it stole hundreds of millions of records containing patient data. The company confirmed a cyber incident occurred but the full scope of the theft has not yet been independently verified. ShinyHunters is known for large-scale data theft and extortion against major organizations. The healthcare sector remains a frequent target for data-theft extortion groups.

Malwarebytes Labs · 15d agoData breach

Pharmaceutical giant McKesson warns of 'service degradation' following cyberattack

Pharmaceutical giant McKesson disclosed a cyberattack on a third-party application that exfiltrated customer data, claimed by ShinyHunters.

McKesson reported a cybersecurity incident involving an unnamed third-party application, with attackers exfiltrating data tied to its oncology and surgical business units. The company filed with the SEC, offered credit monitoring, and said it had received reasonable assurance the attackers were no longer inside its systems. The ShinyHunters group claimed responsibility and threatened leaks; McKesson reported $106 billion in revenue last quarter and distributes about one-third of North American prescriptions.

The Record · 15d agoRansomware in the wild

Risky Bulletin: Dutch intel services to get extensive new powers

Netherlands proposed a bill granting AIVD and MIVD expanded warrantless tapping, faster hacking powers, and forced data disclosure, citing Russia, China, and Iran threats.

The Dutch government introduced a bill greatly expanding surveillance powers of intelligence agencies AIVD and MIVD, allowing up to one year of tapping without pre-approval and simplified hacking operations against 'foreign adversaries'. Agencies could compel Dutch companies or citizens to provide data under threat of charges, share data with the private sector, and oversight bodies would merge into a new CTT board. The bill follows similar overhauls in Ireland, Germany, and France after Russia's invasion of Ukraine. The newsletter also reports Moonwell hacked for $8.7M, a Cosmos EVM bug exploited for ~$3M, ShinyHunters listing McKesson with claimed hundreds of millions of records, and a pro-Kremlin DDoS claim against Norway's government network.

Risky Business News · 15d agoPolicy & legal

ShinyHunters claims it stole 284 million patient records from McKesson

ShinyHunters claims theft of 284 million patient records from McKesson via vishing, Okta takeover, and Salesforce/Snowflake access, demanding $55,236,150.

McKesson disclosed in an SEC filing a cybersecurity incident detected August 25, 2026, involving unauthorized access to third-party applications and data exfiltration affecting a subset of customers in its Oncology & Multispecialty and Medical-Surgical business units. ShinyHunters told BleepingComputer it entered through vishing calls to employees, used stolen credentials to take over Okta single sign-on accounts, and extracted about a terabyte of data from Salesforce and Snowflake environments over four days. The group claims 284 million database rows including names, addresses, Social Security numbers, Medicaid details, medical record numbers, and medication data, and demanded $55,236,150 with a 72-hour deadline; none of these claims have been independently verified.

Help Net Security · 16d agoData breach

Related CVEs

  • CVE-2026-8354810.05%
    Pre-Authentication SSRF in SonicWall SMA1000 Appliance Workplace Interface
    CVE-2026-83548 is a critical (CVSS 3.1 score 10.0) server-side request forgery (SSRF) vulnerability in the Workplace interface of SonicWall SMA1000 appliances, caused by an unintended alternate access path (unprotected alternate channel, CWE-441; SSRF, CWE-918). Because it is pre-authentication, any remote unauthenticated attacker who can reach the interface can trigger it and gain unauthorized access to sensitive functionality and perform unauthorized operations. CISA lists all SonicWall SMA1000 appliances as affected, with CPE data naming the SMA 8200v and SMA 6210/7210 firmware; internet-exposed units are at highest risk. The flaw is being actively exploited in the wild: it was added to CISA's Known Exploited Vulnerabilities catalog on 2026-09-02 alongside companion zero-day CVE-2026-83549, which reporting suggests may form an attack chain with this SSRF. Exploitation probability is elevated (EPSS 4.7%, 91st percentile) and no public proof-of-concept is known.
    · SonicWall SMA1000 appliance Workplace interface · SonicWall SMA 8200v KEVmoderate
  • CVE-2026-95869.312%
    Unauthenticated SQL Injection RCE in Sangoma Switchvox SMB Edition
    Sangoma Switchvox SMB Edition 8.3 (build 104997) contains an unauthenticated SQL injection flaw (CWE-89) in its /pa endpoint, where the user-controlled PhoneIP value from XML input is concatenated directly into PostgreSQL queries without sanitization or parameterization. A single crafted request lets a remote, unauthenticated attacker execute arbitrary SQL statements against the backend PostgreSQL database, which can be escalated to remote code execution on the server. Any organization running the affected Switchvox SMB Edition build is exposed, especially appliances reachable from the internet. Exploitation is confirmed in the wild: the flaw was added to CISA's KEV catalog on 2026-09-02, and researchers have observed attackers using it without credentials to deploy reverse shells and cryptocurrency miners.
    · Sangoma Switchvox SMB Edition 8.3 (build 104997) KEV PoC moderate
  • CVE-2026-835497.89%
    Authenticated OS Command Injection RCE in SonicWall SMA1000 Appliance Console
    CVE-2026-83549 is a post-authentication OS command injection flaw (CWE-78) in the Appliance Management Console (AMC) of SonicWall SMA1000 appliances. An attacker who authenticates to the AMC with administrator privileges can, under specific conditions, inject arbitrary operating system commands and achieve remote code execution on the appliance. Only organizations running SMA1000-series appliances, including the SMA 6210, SMA 7210, and SMA 8200v models cited in the data, are affected. CISA added the flaw to the KEV catalog on 2026-09-02, and news reports describe active exploitation, possibly chained with companion zero-day CVE-2026-83548, with reverse shells and cryptocurrency miners observed; no public proof-of-concept is known. EPSS assigns an 8.5% probability of exploitation within 30 days (95th percentile).
    · SonicWall SMA1000 series appliances - Appliance Management Console (AMC) · SonicWall SMA 6210 (SMA1000 series firmware) KEVmoderate
  • CVE-2026-629118.01%
    Capture-Replay Authentication Bypass in Microsoft Exchange Server
    Microsoft Exchange Server contains an authentication bypass flaw (CWE-294) in which captured authentication material can be replayed, allowing an authorized attacker to elevate privileges over a network. Per the CVSS vector, the attack is network-based with low complexity but requires the attacker to already hold low privileges and some user interaction, and success yields high impact on confidentiality, integrity, and availability. Affected products include on-premises Exchange Server and Exchange Server Subscription Edition, though specific vulnerable version ranges are not specified in the available data. Public scans indicate nearly 22,000 Exchange servers remain exposed to the flaw following the August 2026 Patch Tuesday fixes. No in-the-wild exploitation, public proof-of-concept, or KEV listing is known; the bug was demonstrated at Pwn2Own (ZDI-26-534) and carries an EPSS estimate of 1.3% probability of exploitation within 30 days.
    · microsoft exchange server · microsoft exchange server subscription editionlarge

Appears with

threat actor ShinyHunters 12organization McKesson 8vendor McKesson 5threat actor The Gentlemen 2product Okta 2vendor Snowflake 2organization FBI 2organization ShinyHunters 2vendor Salesforce 2vendor Anthropic 2ai model Hugging Face cloud LLM 1organization CareCloud 1organization CISA 1organization Edelson Lechtzin LLP 1organization BleepingComputer 1ai model Claude Opus 5 1
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