Cybersecurity briefing, 2026-03-24

Here's your PlainSec briefing for Tuesday, March 24th.

• Interlock ransomware uses zero-day to compromise firewalls
• Critical SharePoint flaw being actively exploited
• CISA orders federal agencies to patch n8n RCE
• Iran-related cyber campaigns spike with wipers and ransomware
• Debian fixes GStreamer RIFF parser integer overflow
• Internet-exposed KACE appliances suffer administrative takeover
• Voice phishing drives 11% of intrusions in 2025
• Rockwell vulnerability allowing remote ICS hacking exploited in attacks
• Oracle patches critical unauthenticated RCE in Fusion Middleware

Recent editions

• Monday, March 23, 2026: Critical SharePoint flaw being actively exploited · 8 stories
• Sunday, March 22, 2026: CISA orders federal patch for Zimbra XSS flaw · 6 stories
• Saturday, March 21, 2026: Interlock ransomware uses zero-day to compromise firewalls · 9 stories
• Friday, March 20, 2026: Russian APT breaches Ukrainian maritime agency through Zimbra flaw · 10 stories
• Thursday, March 19, 2026: Critical ScreenConnect flaw and SILENTCONNECT loader observed · 9 stories
• Wednesday, March 18, 2026: Boggy Serpens escalates attacks on maritime and energy · 10 stories
• Tuesday, March 17, 2026: Wing FTP Server flaw added to federal KEV list · 10 stories