Latest cybersecurity reporting from selected sources.

Novo Nordisk Breach Involved 'Copying' of Patient, Healthcare Provider InfoA hack on Danish pharmaceutical manufacturer Novo Nordisk has compromised some patients' clinical trial information, the maker of popular weight loss and diabetes treatment drugs including Wegovy and Ozempic said. The company is working to bring affected IT systems back online.

Attackers Attempted to Reroute Hospital Medicaid ReimbursementsA hack on a Connecticut Medicaid web portal involving compromised credentials of a healthcare provider has affected the payment account and other information for about 22,500 patients. The data theft is the latest breach involving a healthcare related web portal hack. Why does this keep happening?

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.

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.

Cybercrime Group First Listed Ohio Health System as a Data Theft Victim Last JuneOhio-based Kettering Health is notifying current and former patients and "affiliates" that their personal, health and financial information was potentially compromised in a May 2025 ransomware attack and data theft incident claimed by cybercriminal gang Interlock.

Health Info in Mix With Compromised Data in Latest Breach Hitting a SchoolA for-profit university with campuses in New York and the Caribbean is notifying nearly 321,000 individuals of a December 2024 data theft incident that compromised their personal and health information. Monroe University is among the latest educational institutions disclosing hacks.

Insurer's Hack Could Rank as Largest US Health Data Breach Reported in 2025Supplemental health insurer Aflac is notifying 22.65 million people whose sensitive health and personal information, including Social Security numbers, was potentially compromised in a June data theft incident. The incident will likely rank as the biggest U.S. health data breach reported in 2025.

Insurer's Hack Could Rank as Largest US Health Data Breach Reported in 2025Supplemental health insurer Aflac is notifying 22.65 million people whose sensitive health and personal information, including Social Security numbers, was potentially compromised in a June data theft incident. The incident will likely rank as the biggest U.S. health data breach reported in 2025.

Largest Breach of 2025 Hits 10.5M People, Multiple Insurers, State AgenciesProposed federal class action litigation and various investigations are piling up against Conduent Business Solutions following its recent public disclosure that an October 2024 hacking incident potentially compromised personal and health information of more than 10.5 million people.

Medication Tech Firm Says Hacking Incident Contained to One Employee Email AccountA Florida firm that offers medication therapy management services to health plans is notifying nearly 150,000 individuals that their information was potentially compromised in a phishing attack affecting one employee's email account for only about an hour. Why do users still fall for phishing scams?

Breach Affecting 104,000 Underscores Health Data Risks for Non-Healthcare FirmsAn Ohio hand tool manufacturer that sells its products through franchises is notifying nearly 104,000 people of a breach potentially compromising their medical data. The incident is a cautionary tale for non-healthcare sector entities about the risks they face involving health information.

Absolute Dental Says Breach Involved Third-Party Managed Services FirmA Nevada dental practice is notifying more than 1.2 million individuals of a hacking incident that compromised sensitive health and personal information. The incident involved "inadvertent execution of a malicious version of a legitimate software tool," said Absolute Dental.

Senate HELP Committee Leaders Ask Insurer: What Went Wrong in the Cyberattack?A U.S. Senate committee is demanding details from insurance giant Aflac about the company's recent cyberattack that compromised the personal and health information of a yet undisclosed number of Americans. Senators last year gave the same scrutiny to the Change Healthcare mega-breach.

What Makes Timely and Accurate Breach Reporting So Difficult for Some Organizations?An Illinois-based brokerage firm that works with employers, businesses and consumers to obtain various types of insurance coverage is notifying nearly 156,000 people that their protected health information was compromised in a data theft hack that occurred more than a year ago. Why the delay?

At Least 410,000 Patients Reported Affected, But Likely Even More VictimsMonths after news first broke that a hacking incident compromised legacy patient data hosted by Cerner electronic health record servers that were set to migrate to parent company Oracle's cloud environment, data breach reports related to the hack are still slowly trickling in to regulators. What's taking so long?

2021 Pysa Hack Compromised PHI of Nearly 25,000 PatientsA HIPAA breach investigation into a 2021 attack involving a variant of Pysa ransomware resulted in a $250,000 fine for an upstate New York specialty surgery practice, which also agreed to a corrective action plan that will be monitored by federal regulators for the next two years.

2021 Pysa Hack Compromised PHI of Nearly 25,000 PatientsA HIPAA breach investigation into a 2021 attack involving a variant of Pysa ransomware resulted in a $250,000 fine for an upstate New York specialty surgery practice, which also agreed to a corrective action plan that will be monitored by federal regulators for the next two years.

Cierant Corp. Says Cleo MFT Zero-Day Exploit Compromised Health Plan Client DataA Connecticut-based firm that provides print and electronic document management services to health plans has reported to regulators that an exploit of a vulnerability in file transfer software from third-party vendor Cleo has resulted in a health data compromise affecting nearly 233,000 people.

345 Major HIPAA Breaches Reported to Feds So Far This Year, Affecting 29.9 MillionMidway through 2025, the federal website listing major health data breaches in the U.S. shows a familiar scene: Many hacking incidents including ransomware, dozens of third-party vendor incidents, and millions of individuals affected by compromised personal data.

A data breach at Nationwide Recovery Services compromised data of 200,000 Harbin Clinic patients