Latest cybersecurity reporting from selected sources.

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.

Ransomware Gang Rhysida Leaks 3.7TB of Data Stolen From Maryland Hospital SystemMaryland-based MedStar Health, which operates 10 hospitals, is notifying patients about a data theft incident affecting their personal information. Ransomware group Rhysida claims on its darkweb leak site to have 3.7 terabytes of MedStar's data, including "over 7 million pieces of patient data."

Anthropic on Wednesday revealed that it disrupted a sophisticated operation that weaponized its artificial intelligence (AI)-powered chatbot Claude to conduct large-scale theft and extortion of personal data in July 2025

Alerts Come on the Heels of Recent Attacks on InsurersU.S. federal authorities are warning the public and healthcare sector entities of email and fax phishing scams by fraudsters seeking to steal personal information about patients or payments. The warnings come as three large U.S. insurers continue to recover from recent cyberattacks.

Personal Data Stolen in Ransomware Hit, Says Dutch Owner of Stop & Shop, Giant FoodFood retail giant Ahold Delhaize USA is notifying 2.2 million current and former employees, as well as an unspecified number of employees in the Netherlands, that a November 2024 data breach exposed their personally identifiable information, including Social Security numbers and medical details.

Community Dental Care Is State's Largest Non-Profit Serving Medicaid PatientsMinnesota's largest nonprofit Medicaid dental practice is notifying nearly 135,000 people of a December 2024 data theft incident that potentially compromised their health and personal information, ranging from medical information to passport numbers.

7 Texas Health and Human Services Workers Fired in Incident Affecting 61,000 peopleAuthorities in Texas are investigating an insider incident at the Texas Health and Human Services Commission that led to the firing of seven employees, an investigation into hundreds of thousands of dollars in stolen funds and notification of a breach of personal information affecting 61,000 people.

Details of afflictions and care plastered online BayMark Health Services, one of the biggest drug addiction treatment facilities in the US, says it is notifying some patients this week that their sensitive personal information was stolen.…

Class act: Biz only serves 60M people across America, no biggie A leading education software maker has admitted its IT environment was compromised in a cyberattack, with students and teachers' personal data – including some Social Security Numbers and medical info – stolen.…

Ransomware scum LockBit claims it did the dirty deed Equinox, a New York State health and human services organization, has begun notifying over 21 thousand clients and staff that cyber criminals stole their health, financial, and personal information in a "data security incident" nearly seven months ago.…

Robert Purbeck, a 45-year-old man from Idaho, has been sentenced to ten years in prison for hacking at least 19 organizations in the United States, stealing the personal data of more than 132,000 people, and multiple extortion attempts. [...]

UnitedHealth has confirmed for the first time that over 100 million people had their personal information and healthcare data stolen in the Change Healthcare ransomware attack, marking this as the largest healthcare data breach in recent years. [...]

UnitedHealth has confirmed for the first time that over 100 million people had their personal information and healthcare data stolen in the Change Healthcare ransomware attack, marking this as the largest healthcare data breach in recent years. [...]

Young Consulting Says Health Data Exposed; Ransomware Group Leaked Stolen DataYoung Consulting, which develops software for the stop-loss insurance market, is notifying 1 million individuals that their personal information was stolen earlier this year in a hack attack. The BlackSuit ransomware group, a rebrand of Royal, subsequently claimed credit and leaked stolen data.

Kootenai Health has disclosed a data breach impacting over 464,000 patients after their personal information was stolen and leaked by the 3AM ransomware operation. [...]

Pharmaceutical giant Cencora has confirmed that patients' protected health information and personally identifiable information (PII) was exposed in a February cyberattack. [...]

Probe: Worker at speech-recog outfit Nuance wasn't locked out after firing Updated American healthcare provider Geisinger fears highly personal data on more than a million of its patients has been stolen – and claimed a former employee at a Microsoft subsidiary is the likely culprit.…

Two ransomware gangs bragged of massive theft of personal info and medical files Consulting Radiologists has notified almost 512,000 patients that digital intruders accessed their personal and medical information during a February cyberattack.…

The Breach Notice Raises the Question of Whether Sav-Rx Paid a RansomA Nebraska firm that provides medication benefits management and pharmacy services is notifying more than 2.8 million individuals of an October 2023 hacking incident involving the potential theft of their personal information, including Social Security numbers. Did the company pay a ransom?