SYNful Knock

Blog post

Evolution of attacks on Cisco IOS devices

While “SYNful Knock” is the latest identified malware targeting Cisco devices running Cisco IOS, we have identified and investigated six other malware incidents during the last four years that target Cisco devices running Cisco IOS. The nature of threats is evolving and Cisco will continue to adapt technology delivering trustworthy solutions that our customers can […]

October 8, 2015 7 min read
Blog post

SYNful Knock: Detecting and Mitigating Cisco IOS Software Attacks

Historically, threat actors have targeted network devices to create disruption through a denial of service (DoS) situation. While this remains the most common type of attack on network devices, we continue to see advances that focus on further compromising the victim’s infrastructure. Recently, the Cisco Product Security Incident Response Team (PSIRT) has alerted customers around […]

September 15, 2015 1 min read