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McKesson

1 mentions in 7 days · 8 in 30 days · 8 total · first seen · last

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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

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

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

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 · 15d agoData breach

Appears with

victim McKesson 8threat actor ShinyHunters 7vendor McKesson 4organization ShinyHunters 2organization Nutex Health 1organization SEC 1organization Sophos 1organization The Gentlemen 1product Okta 1product Salesforce 1product Snowflake 1vendor Have I Been Pwned 1vendor Malwarebytes 1vendor Okta 1vendor Salesforce 1vendor ShinyHunters 1
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