Daily Threat Briefing — Apr 07, 2026

📰 Cybersecurity News Headlines

Top stories from leading cybersecurity publications as of April 7, 2026.

1. German authorities identify REvil and GangCrab ransomware bosses
   — Bleeping Computer
   
   The Federal Police in Germany (BKA) has identified two Russian nationals as the leaders of GandCrab and REvil ransomware operations between…
2. New GPUBreach attack enables system takeover via GPU rowhammer
   — Bleeping Computer
   
   A new attack, dubbed GPUBreach, can induce Rowhammer bit-flips on GPU GDDR6 memories to escalate privileges and lead to a full system compro…
3. AI-Assisted Supply Chain Attack Targets GitHub
   — Dark Reading
   
   PRT-scan is the second in recent months where a threat actor appears to have leveraged AI for automated targeting of a widespread GitHub mis…
4. Axios Attack Shows Social Complex Engineering Is Industrialized
   — Dark Reading
   
   The attack on the popular NPM package Axios is just one of many targeting maintainers and has shone a light on how threat actors can scale s…
5. Fortinet Issues Emergency Patch for FortiClient Zero-Day
   — Dark Reading
   
   The authentication bypass flaw, tracked as CVE-2026-35616, is the latest in a series of Fortinet vulnerabilities that have been exploited in…
6. Disgruntled researcher leaks “BlueHammer” Windows zero-day exploit
   — Bleeping Computer
   
   Exploit code has been released for an unpatched Windows privilege escalation flaw reported privately to Microsoft, allowing attackers to gai…
7. Microsoft fixes Classic Outlook bug causing email delivery issues
   — Bleeping Computer
   
   Microsoft has resolved a known issue that was preventing some Classic Outlook users from sending emails via Outlook.com. […]
8. Iran-Linked Password-Spraying Campaign Targets 300+ Israeli Microsoft 365 Organizations
   — The Hacker News
   
   An Iran-nexus threat actor is suspected to be behind a password-spraying campaign targeting Microsoft 365 environments in Israel and the U.…
9. DPRK-Linked Hackers Use GitHub as C2 in Multi-Stage Attacks Targeting South Korea
   — The Hacker News
   
   Threat actors likely associated with the Democratic People's Republic of Korea (DPRK) have been observed using GitHub as command-and-contro…
10. Automated Credential Harvesting Campaign Exploits React2Shell Flaw
    — Dark Reading
    
    An emerging threat cluster tracked as UAT-10608 is exploiting vulnerable Web-exposed Next.js apps and using an automated tool to exfiltrate …
11. Multi-OS Cyberattacks: How SOCs Close a Critical Risk in 3 Steps
    — The Hacker News
    
    Your attack surface no longer lives on one operating system, and neither do the campaigns targeting it. In enterprise environments, attac…
12. ⚡ Weekly Recap: Axios Hack, Chrome 0-Day, Fortinet Exploits, Paragon Spyware and More
    — The Hacker News
    
    

Generated by HiveNet.ai Threat Intelligence Platform · April 7, 2026 · Sources: The Hacker News, Bleeping Computer, Krebs on Security, Dark Reading, SANS ISC