An actively exploited zero-day in Adobe Reader allows data exfiltration through malicious PDF files. No user interaction beyond opening the file is required. Immediate mitigation measures available.
On April 3, 2026, researcher Nightmare-Eclipse published a fully functional Windows LPE exploit on GitHub with no Microsoft patch available. Any attacker with initial access can escalate to SYSTEM privileges.
The FBI and DoJ neutralized a Russian GRU operation that exploited compromised home and SMB routers for DNS hijacking, espionage, and credential theft. Routers remain the weakest link in network security.
On April 7, 2026, attackers compromised Nextend's update infrastructure and distributed a RAT through the official Smart Slider 3 update channel. 800,000 WordPress sites were exposed for approximately 6 hours.
Hackers claim the compromise of several major Colombian banks on April 8, 2026, publishing samples of customer data online. Risk analysis, regulatory obligations, and lessons for the financial sector.
An active campaign targets internet-exposed ComfyUI instances. Automated exploitation, dual monetization through Monero cryptomining and botnet, persistence via a fake GPU node. Technical analysis and recommendations.
Analysis of the April 2026 Patch Tuesday: critical Microsoft patches, follow-up on March CVEs still unpatched, and prioritization guide for security teams. The average exploitation window for critical CVEs has dropped below 24 hours.
Anthropic announces Project Glasswing and Claude Mythos Preview, an AI model capable of identifying and exploiting thousands of zero-days. Access restricted to ~40 organizations responsible for critical infrastructure security.
AI inference servers (ComfyUI, Ollama, Stable Diffusion) have become high-value targets for cryptominers. Complete hardening guide: authentication, reverse proxy, network segmentation, GPU monitoring.
Behind the Axios supply chain attack lies a 6-month social engineering operation. UNC1069 (North Korea) built a trust relationship with maintainer Jason Saayman before stealing his npm credentials.
The Qilin ransomware group breached Covenant Health (Michigan, 16 hospitals) and exfiltrated data on 480,000 patients. Analysis of HIPAA notification obligations, Qilin's threat profile, and the rise of ransomware in healthcare in 2026.
A critical pre-authentication flaw in FortiClient EMS 7.4.5-7.4.6 enables remote code execution. Exploited since March 31, added to CISA's KEV catalog on April 6, an emergency hotfix is available.