Latest cybersecurity reporting from selected sources.

Ransomware Attack Taught Lessons on Health Sector Resiliency, Vendor RedundancyIt's been one year since hackers attacked IT services provider Change Healthcare, quickly shutting down critical processes for thousands healthcare entities, triggering a data breach affecting 190 million people. So what top lessons are emerging from that massive disruption and data compromise?

UnitedHealth Group CEO Andrew Witty Explains the Steps the Company Is TakingLawmakers on Wednesday grilled UnitedHealth Group CEO Andrew Witty over security lapses leading up to the Change Healthcare cyberattack and the company's handling of the incident, including the sectorwide disruption it caused and the compromise of millions of individuals' sensitive data.

Report to State Regulators Indicates Big Jump in Number of Patients AffectedA Mississippi health system is notifying nearly 253,000 individuals that their data was potentially compromised in a "malicious and sophisticated ransomware" attack last August that also took IT systems offline. The cybercriminal gang Rhysida had claimed responsibility for the assault.