Cisco email security appliances rooted and backdoored via still unpatched zero-day
Cisco email security appliances rooted and backdoored via still unpatched zero-day 2025-12-17 at 21:47 By Zeljka Zorz A suspected Chinese-nexus threat group has been compromising Cisco email security devices and planting backdoors and log-purging tools on them since at least late November 2025, Cisco Talos researchers have shared. “Our analysis indicates that appliances with non-standard […]
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