Cisco email security products actively targeted in zero-day campaign
Two Chinese-nexus groups have been exploiting a newly discovered flaw to establish persistence and launch backdoors.
<ul><li>Cisco confirms zero‑day (CVE‑2025‑20393) in Secure Email appliances exploited by China‑linked actors</li><li>Attackers deployed Aquashell backdoor, tunneling tools, and log‑clearing utilities… [+2883 chars]