Week in Review: Linux Rootkit Deployed on F5 BIG-IP APM Devices, Cisco FMC Bugs Exploited
Help Net Security, Sunday, September 13th, 2026
Major security incidents including F5 rootkit, Cisco vulnerabilities, and AI agent exploitation reported.
This week's cybersecurity roundup highlighted critical threats across enterprise infrastructure.
Attackers deployed a Linux rootkit on F5 BIG-IP APM devices that hides web shells in memory, while nation-state and ransomware actors actively exploited authentication bypass flaws in Cisco Firewall Management Center.
Additional concerns include AI agents automating cyberattacks with minimal human involvement, breaches affecting millions including student data and crypto wallets, and emerging phishing techniques leveraging browser-based fake login pages and social engineering against personal devices.