A cyberattack on UnitedHealth Group’s technology unit, Change Healthcare, reportedly compromised the personal data of 190 million individuals, marking it as one of the largest healthcare data breaches in US history. The hack, attributed to the Blackcat ransomware group, disrupted claims processing and affected numerous patients and providers. Details like health insurance member IDs, patient diagnoses, treatment information and social security numbers were likely exposed.

Mandiant warns of attacks on newly-disclosed Ivanti remote takeover threat
Google’s Mandiant team has issued an alert about a remote code execution flaw in the Ivanti Connect Secure VPN platform. The vulnerability, designated CVE-2025-22457, is