The company suffered one sophisticated five-alarm campaign and one messy spray-and-pray attack, mere days apart.

Cisco said it discovered a Chinese hacking campaign targeting its customers by exploiting a zero-day in some of the company's most popular products.

Cisco disclosed that a China-linked hacking group exploited a previously unknown vulnerability in its email security products, allowing attackers to compromise systems that sit at the center of ...

The unpatched flaw affects AsyncOS-based Secure Email appliances, with Cisco investigating scope and urging rebuilds in confirmed compromise cases. Cisco has warned that a China-linked hacking group ...

Chinese hackers are exploiting a critical Cisco email security flaw, gaining root access and installing backdoors. This ...

Chinese threat group UAT-9686 has been exploiting the zero-day CVE-2025-20393 to hack Cisco security appliances.

Cisco confirms zero‑day (CVE‑2025‑20393) in Secure Email appliances exploited by China‑linked actors Attackers deployed Aquashell backdoor, tunneling tools, and log‑clearing utilities for persistence ...

Cisco notified customers this week to patch a critical vulnerability that could allow attackers to bypass authentication and login into the web management interface of Cisco email gateway appliances ...

A novel way to abuse a decades-old protocol used to send emails since the beginning of the Internet allows attackers to evade Domain-based Message Authentication, Reporting and Conformance (DMARC) and ...

New vulnerabilities found in Cisco internal testing allow remote access and scripting that could lead to the loss of sensitive user data. Cisco has issued alerts for a vulnerability found in its email ...

Cisco is wheeling out three flavors of e-mail security services, the first of a series of hosted security services the company plans to announce. Customers can chose to have the service entirely ...