Detects creation, modification, or deletion of Kubernetes MutatingWebhookConfigurations or ValidatingWebhookConfigurations by non-system identities. Admission webhooks intercept every API request matching their rules before persistence, giving an attacker powerful capabilities: injecting malicious sidecars into every new pod via a mutating webhook, blocking security tooling deployments via a validating webhook, or silently exfiltrating pod specifications to an external server. Webhook manipulation is a stealthy persistence and defense evasion technique because the webhook configuration itself looks benign in kubectl output while actively modifying or intercepting all matching Kubernetes API traffic.

0 exclusive techniques.This is coverage no other published rule has; it is not this rule's total technique count.