Cisco warned customers today of an unpatched, maximum-severity Cisco AsyncOS zero-day actively exploited in attacks targeting ...

The unpatched flaw affects AsyncOS-based Secure Email appliances, with Cisco investigating scope and urging rebuilds in ...

Cisco confirms an unpatched CVSS 10.0 zero-day in AsyncOS actively exploited to gain root access on email security appliances ...

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 ...

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

Tumbleweed says later this month it will ship technology that makes it easier for corporations to send secure and encrypted e-mail from their existing messaging systems and messaging-enabled ...

Security researchers have found inconsistencies in how some Simple Mail Transfer Protocol (SMTP) servers handle end-of-data sequences. This allows the injection of SMTP commands into email messages in ...

Email remains the primary vehicle used by cybercriminals, with 90% of cyberattacks delivered via this attack vector. Email is also the most essential and widely used business communication tool.