H-ISAC TLP Green: Daily Cyber Headlines - December 8, 2025

Today’s Headlines:  
           

Leading Story

• Critical React2Shell Flaw Actively Exploited In China-Linked Attacks

Data Breaches & Data Leaks 

• Pharma Firm Discloses Data Breach After Ransomware Attack

Cyber Crimes & Incidents

• Threat Actors Exploiting Microsoft Teams Notifications to Deliver CallBack Phishing Attack

Vulnerabilities & Exploits  

• NVIDIA Issues Critical Patches for Triton Interface Server to Prevent Remote DoS Attacks

Trends & Reports

• Healthcare Cyber Insurance at an Inflection Point Amid Rising Ransomware and Litigation Risks
• Ransomware Threat Actors Show More Interest in Data Exfiltration and Less in Encryption

Privacy, Legal & Regulatory

• US and Allies Issue Guidance for Safe AI Integration in Critical Infrastructure

Upcoming Health-ISAC Events

• Global Monthly Threat Brief   
  • Americas – December 16, 2025, 12:00-01:00 PM ET
  • European – December 17, 2025, 03:00-04:00 PM CET

View the detailed report below.