Email has been around for 50 years, and while it's fast and efficient, it's not always secure. Best-in-breed security is essential for protecting companies from phishing and other cyberattacks.

“There are no workarounds identified that directly mitigate the risk concerning this attack campaign,” is not what you want to read, having just been informed of a zero-day exploit concerning a Common ...

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 ...

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 has addressed a high severity vulnerability that could allow remote attackers to crash Cisco Secure Email appliances using maliciously crafted email messages. The security flaw (tracked as ...

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 ...

Businesses using Cisco Secure Email Gateways (SEG) are urged to update their systems immediately following the disclosure of a critical vulnerability that could grant attackers complete control over ...

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 ...

A recently discovered flaw in Cisco Email Security Appliance (ESA) and Cisco Secure Email and Web Manager allows threat actors to waltz past security protections and log into endpoints with ...

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 ...