Behavioral Analytics with Falco

Network policies block traffic. RBAC limits API access. Pod Security Standards restrict container configurations. All of these are preventive controls, and they stop known-bad configurations before a workload runs. None of them tell you what your containers are actually doing once they start.

A container that passed every admission check can still spawn a shell, read /etc/shadow, download a binary from the internet, and exfiltrate data. Preventive controls cannot catch this because the behavior is legitimate from a configuration standpoint. You need runtime detection: something that watches what processes do at the syscall level and fires an alert when behavior deviates from the expected baseline.