Change Healthcare
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Okta says North Korean ‘IT worker’ scam is targeting healthcare, finance and AI hiring
Okta Threat Intelligence reported that nearly half of companies targeted by a North Korean-linked fake remote-worker scheme are outside IT, with rising activity in healthcare, finance and AI hiring; the firm tracked over 130 identities tied to more than 6,500 interviews from 2021 to mid-2025 and warned the sample likely understates the full scale.
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KillSec ransomware hits Brazil’s healthcare IT supply chain, exposing tens of thousands of records
KillSec has claimed responsibility for a September 2025 attack on Brazil’s healthcare software provider MedicSolution, breaching the healthcare IT supply chain and exposing more than 34 GB of sensitive health data across clinics and laboratories, including medical and minor records.
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Wyden urges FTC to probe Microsoft over alleged ‘gross cybersecurity negligence’ linked to ransomware attacks, citing Ascension breach
U.S. Senator Ron Wyden has urged the FTC to investigate Microsoft, accusing the company of cybersecurity negligence linked to ransomware attacks on critical infrastructure, including a major Ascension health-system breach that affected millions of people.
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DaVita ransomware breach exposes data of nearly 2.7 million people, OCR confirms
DaVita disclosed that a ransomware attack compromised the personal and health data of nearly 2.7 million people, with OCR confirming 2,689,826 affected and the company noting a possible 2.4 million. The breach exposed information from DaVita’s labs database, with the company offering credit monitoring to affected individuals as investigations continue.
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CISA and FBI Warn of Rising Interlock Ransomware Threats Targeting Businesses
CISA and the FBI have alerted businesses about a significant increase in Interlock ransomware attacks, which primarily target the healthcare sector. The advisory includes strategies for network defense against these sophisticated double extortion threats.
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Esse Health Reports Data Breach Affecting Over 263,000 Patients
Esse Health has reported a data breach impacting over 263,000 patients in a cyberattack that began on April 21. The healthcare provider reassures patients that their information is being protected and offers free identity monitoring services.
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Ransomware Group Interlock Claims Responsibility for Kettering Health Cyberattack
Interlock, a ransomware group, claimed responsibility for the recent cyberattack on Kettering Health, revealing they stole over 940 gigabytes of data. Kettering Health is currently working to restore systems disrupted by the attack, which remains a significant threat to healthcare cybersecurity.
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Data Breach at Serviceaide Affects 500,000 Catholic Health Patients
A data breach at Serviceaide has exposed sensitive health information for approximately 500,000 patients connected to Catholic Health in New York. The breach was linked to a misconfigured database and has raised concerns about data security across the healthcare industry.
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Ascension Healthcare Data Breach Exposes Information of Over 430,000 Patients
Ascension has disclosed that a data breach has compromised the personal and healthcare information of over 430,000 patients, prompting the organization to offer free identity monitoring services to those affected. The breach, linked to a former business partner, has raised concerns about data security in the healthcare sector.
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Data Breach at Blue Shield of California Sparks Concern Among Security Leaders
A recent data breach at Blue Shield of California has raised concerns among security leaders, emphasizing the increasing fragility of consumer data protection. Experts call for stronger security measures and a more proactive approach to prevent such incidents.
