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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.

CyberScoopAug 31, 21:39 UTC · 16d agoData breach in the wild

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 RecordAug 31, 12:59 UTC · 16d agoRansomware in the wild

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.netSep 10, 13:31 UTC · 6d agoData breach in the wild 2 sources

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 · SecurityAug 31, 18:10 UTC · 16d agoData breach in the wild

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 · SecurityAug 31, 22:10 UTC · 16d agoData breach in the wild

Florida says motor vehicle data breach tied to credentials stolen from officer’s personal device

ShinyHunters breached Florida's DMV using credentials stolen from a police officer's personal device; the state confirmed the breach and is investigating.

Florida's Department of Highway Safety and Motor Vehicles (FLHSMV) confirmed a data breach after ShinyHunters obtained DMV data using credentials a criminal actor took from a Plant City police officer's personal electronic device. The department learned of the breach on September 4, is investigating with the Florida Digital Service, and ShinyHunters shared a DMV record of Jeffrey Epstein as proof of access. Experts initially speculated a link to the IDScan breach of 153 million driver's licenses. Anthropic reported that suspected ShinyHunters affiliates use AI to scan credentials, map systems, and exfiltrate data, in one case moving from a stolen developer token to cloud admin access in about three hours.

The Recordupdated Sep 16, 18:00 UTC · 13h agofirst Sep 11, 20:00 UTC · 5d agoData breach in the wild 3 sources

Microsoft discloses two actively exploited zero-days among 974 vulnerabilities

Microsoft patches 974 flaws in record Patch Tuesday, including two actively exploited Windows zero-days enabling privilege escalation.

Microsoft's largest-ever Patch Tuesday addresses 974 vulnerabilities, with CVE-2026-81963 (Windows Update Stack) and CVE-2026-85880 (Windows Advanced Local Procedure Call) exploited before disclosure. Both zero-days carry CVSS 7.8 ratings and allow privilege escalation. More than 10% of the defects are rated critical, and researchers attribute the record volume to AI-assisted vulnerability discovery without a matching rise in active exploitation.

CyberScoopSep 8, 22:50 UTC · 8d agoExploit / PoC in the wildCVE-2026-81963 CVE-2026-85880

Pegasus, NoviSpy variant spyware found on devices of Serbian activists

Researchers confirmed the first 2026 Pegasus infection and a new NoviSpy variant on 14 Serbian activists, likely surveillance by Serbian authorities ahead of elections.

Citizen Lab confirmed with high probability the first forensically confirmed Pegasus infection of 2026, on a Serbian student activist hacked via a zero-click exploit between December of last year and January. Amnesty International confirmed two devices infected with a new NoviSpy variant, and the SHARE Foundation documented 14 targets including a member of parliament and a local government official, the largest documented spyware wave in Serbia to date. Evidence points to Serbian police or intelligence services, with NoviSpy infections occurring around police detention ahead of key local and parliamentary elections. Apple threat notifications preceded the findings, and updated iOS versions break the exploit chain.

CyberScoopSep 2, 15:03 UTC · 14d agoThreat actor in the wild