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.

Polymarket says it will fully reimburse customers who lost an estimated $3 million after hackers injected a malicious script into the platform's frontend following a breach at a third-party vendor. [...]

Polymarket confirmed hackers stole funds from some users after attackers injected malicious code through a compromised third-party vendor. Polymarket confirmed that a security breach at a third-party vendor allowed attackers to inject malicious code into its website, leading to the theft of funds from an undisclosed number of users. The company said it has contained […]

More victims have emerged after attackers breached application vendor Klue and used its OAuth tokens to steal customers' Salesforce data.

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.

SoFi Hong Kong is warning that it suffered a data breach after hackers gained access to a database at a third-party vendor containing customer information. [...]

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.

ShinyHunters' attack on Instructure, which owns the widely used Canvas learning management system (LMS), carries big questions about the trust educational institutions put into their vendors.

Vimeo points finger at analytics supplier Anodot, says no logins or card data were touched More than 119,000 Vimeo users's email addresses were extracted in a breach traced to a third-party analytics vendor, according to Have I Been Pwned.…

Security vendor Trellix has suffered a breach involving unauthorized access

The next major breach hitting your clients probably won't come from inside their walls. It'll come through a vendor they trust, a SaaS tool their finance team signed up for, or a subcontractor nobody in IT knows about. That's the new attack surface, and most organizations are underprepared for it

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.

Crooks used simple phone scam to compromise vendor account, spilling personal and financial data belonging to more than 15,000 people A voice-phishing scam targeting one of Ericsson's service providers has exposed the personal data of more than 15,000 individuals after attackers sweet-talked an employee into handing over access.…

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.

When a company gets breached through a third-party security vendor, who should bear responsibility? For one FinTech company, the answer is the firewall provider.

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.

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.