Latest cybersecurity reporting from selected sources.

Business Associates Tied to 50% of Breach Victims as AI-Aided Attacks LoomVendor incidents and hacks, especially data thefts and ransomware attacks, continue to plague the healthcare sector, accounting for the majority of major data breaches reported so far this year. The advent of AI tools in the hands of bad actors, will only heighten the threats, experts predict.

As hospital-at-home programs expand and AI adoption accelerates, healthcare organizations face mounting cloud security demands. Anahi Santiago, CISO of ChristianaCare, discusses vendor accountability, identity management, clinical AI risks and the need for stronger cybersecurity foundations.

Diagnostics Lab Reported 10.3M Patients Affected by Collection Agency's HackMedical laboratory testing giant Labcorp has agreed to pay $35 million to settle class action litigation stemming from a 2018 hacking incident on now-defunct American Medical Collections Agency. Labcorp reported the vendor breach in 2019 as affecting nearly 10.3 million patients.

Study: Monitoring Vendor Risk Remains Much Harder Than Onboarding Third PartiesHealthcare organizations are getting better vetting third-party vendors, including suppliers of medical devices, software and other products. But once these vendors are on board, healthcare firms still struggle with monitoring their security posture and ensuring they keep their promises.

Breach Is Among Several Recent Major Incidents Involving Billing Software ProvidersA publicly traded cancer treatment firm notified investors that a yet-undisclosed number of patients' information was compromised in a 2025 cybersecurity incident involving a third-party billing software vendor. The Oncology Institute provides cancer treatment care to nearly 2 million patients.

The Oncology Institute disclosed a data breach tied to a third-party vendor, potentially exposing patient information after a 2025 cyberattack. The Oncology Institute has confirmed that patient information was impacted in a cybersecurity incident involving a third-party software provider. The healthcare network first disclosed the security breach in November 2025 while the vendor’s investigation was […]

Ransomware and vendor breaches persist. The "2026 Data Breach Investigations Report" (DBIR) highlights how evolving social engineering tactics make the sector more vulnerable.

Incident Involved an Unnamed Third-Party VendorNew York City's municipal healthcare system is notifying nearly 2 million patients of a hacking incident discovered earlier this year involving a third-party vendor. The breach compromised a long list of information, including biometric data such as fingerprints.

Playbook Aims to Help Healthcare, Public Sector Manage AI Vendor Security GapsThe Health Sector Coordinating Council released guidance to help the healthcare and public health sector better manage the explosion of third-party AI vendor cyber risk concerns they face, especially as the technology is embedded in all sorts of products.

Dutch healthcare software vendor ChipSoft has been impacted by a ransomware attack that forced the company to take offline its website and digital services for patients and healthcare providers. [...]

ChipSoft's website remains down but emails are functioning A Dutch healthcare software vendor has been knocked offline following a ransomware attack, officials say.…

Also: RSAC Speakers Warn AI Is Outpacing Security, DoD's Zero Trust Reality CheckIn this week's panel, four ISMG editors discussed growing cyber risks in healthcare following recent vendor breaches, key takeaways from RSAC Conference and whether the Pentagon's zero trust push is delivering real security benefits or just checking off boxes.

CareCloud: Intruder Accessed Systems for 8 Hours, Still Assessing Extent of BreachElectronic health records vendor CareCloud has notified the U.S. Securities and Exchange Commission of a cyber incident earlier this month that temporarily disrupted the software and accessed one of its EHR environments. The company is assessing whether patient data was accessed or stolen.

Why Governance, Access Control and Vendor Oversight Now Define Patient SafetyHealthcare breaches do not start with a single technical failure. Digital risk has become clinical risk, driven by weak governance, excess access and unmanaged vendors. Resilience now depends on governance, not more tooling.

HIPAA Settlement Small Compared to Many OthersU.S. federal regulators fined a dental practice software vendor with a seemingly lowball financial penalty for a high-stakes 2020 hack affecting 15 million individuals that the company failed to report. Maryland-based MMG Fusion agreed to $10,000.

Compromise Affects Healthcare Clients of Co.'s Revenue Cycle Management ServicesBilling services vendor Trizetto Provider Solutions is notifying 3.4 million individuals of a hacking incident discovered in October 2025 that investigators have now determined started nearly a year earlier, when threat actors accessed the company's healthcare clients' insurance related data.

State Officials Investigating Breach of Back-Office Services Provider Found in 2025The victim count in the 2024 hack on back-office support services vendor Conduent Business Services has just ballooned again, with the Xerox-spinoff now reporting to Wisconsin regulators that the incident affected "25 million-plus" people nationwide.

Why Governance, Access Control and Vendor Oversight Now Define Patient SafetyHealthcare breaches do not start with a single technical failure. Digital risk has become clinical risk, driven by weak governance, excess access and unmanaged vendors. Resilience now depends on governance, not more tooling.

Breach Affected More Than a Dozen Healthcare Clients, 2.5M PatientsElectronic health records vendor Veradigm agreed to pay $10.5 million to settle consolidated class action litigation involving a December 2024 hacking incident discovered in mid-2025 that affected more than a dozen healthcare provider clients and about 2.5 million of their patients.

State Monitoring Incident Involving a Health Entity Worker for Potential FraudThe Minnesota Department of Human Services is notifying nearly 304,000 people of data breach involving someone at a healthcare provider who inappropriately accessed information from an IT system managed by a vendor. State officials are monitoring the incident for potential fraud.