Kaspersky Endpoint Security for Linux brings world-class detection to the open-source world. Our 2026 review puts this solution through its paces on Ubuntu Server, RHEL, and Fedora workstations. In our malware detection tests, Kaspersky achieved a remarkable 99.7% detection rate, including 100% blocking of Linux-specific ransomware strains. The file integrity monitoring feature alerts administrators to unauthorized changes in critical system directories in real time. Behavioral analysis detected all 25 of our custom rootkit samples. Performance impact during active scanning was negligible at 2.1% CPU overhead. The software also includes a powerful host-based firewall module that integrates with iptables for granular network access control.