InfoSec News Nuggets 9/11/2025
KillSec Ransomware is Attacking Healthcare Institutions in Brazil The KillSec Ransomware group has threatened to leak sensitive data unless negotiations are initiated promptly. According to threat intelligence reporting by Resecurity, the root cause of the incident – data exfiltration from insecure AWS S3 bucket. Considering the investigation performed by cybersecurity experts, the window of exposure can be estimated at ‘several months.’ Probably, this is the first notable supply chain incident affecting the healthcare industry in Brazil.…