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Zero-Day Vulnerability

Security analyst reviewing Microsoft Defender logs and process details at a multi-monitor workstation while investigating a

ShieldBreak Zero-Day PoC Bypass Targets Microsoft Defender Patches

A publicly shared proof of concept called ShieldBreak claims a working bypass for a previously patched Microsoft Defender flaw, raising the stakes for Windows endpoint defenders.
SiteCountry Team Aug 12, 2026
Network operations center analyst monitoring a Cisco firewall management console for zero-day vulnerabilities.

Cisco FMC Zero-Day CVE-2026-20316: What Hosting Teams Should Know About Active Exploitation

CISA has added a Cisco Secure FMC zero-day to its KEV catalog after reports of active exploitation. Here is what hosting teams and network operators should know about CVE-2026-20316.
SiteCountry Team Aug 1, 2026

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