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April 17, 2026 | ITBriefcase.net Why it matters: Microsoft April 2026 Patch Tuesday addressed second-largest vulnerability count in history with 167 flaws including 2 zero-days (CVE-2026-32201 SharePoint actively exploited, CVE-2026-33825 Windows Defender "BlueHammer"...

April 10, 2026 | ITBriefcase.net Why it matters: Russia's APT28 (GRU military unit 26165) executed FrostArmada campaign since May 2025, compromising 18,000+ MikroTik and TP-Link SOHO routers across 120 countries to hijack DNS traffic, enabling adversary-in-the-middle...

April 3, 2026 | ITBriefcase.net Why it matters: Google patched CVE-2026-5281 on March 31, 2026—the fourth actively exploited Chrome zero-day of 2026—a use-after-free vulnerability in Dawn WebGPU component enabling remote code execution via crafted HTML pages, with...

March 27, 2026 | ITBriefcase.net Why it matters: Cisco Secure Firewall Management Center CVE-2026-20131 (CVSS 10.0) was exploited as a zero-day by Interlock ransomware since January 26, 2026—36 days before public disclosure on March 4—enabling unauthenticated remote...