Runtime Security Tools

Falco, tracee, etc. The 2026 tools.

Falco

CNCF-graduated runtime security. Rules-based detection at the kernel level via eBPF or kernel modules.

Standard for Kubernetes runtime detection. Detects anomalous container behaviour: unexpected exec, sensitive file access, unusual network connections.

Rule library is the value. Maintained by the community; covers known attack patterns. Custom rules for organisation-specific threats.

Tracee (Aqua Security)

eBPF-based; lower overhead than Falco's kernel module mode. Modern alternative; growing adoption.

Behavioural detection in addition to rule-based. Anomaly detection on container behaviour patterns.

Open source with paid Aqua tier. Open-source covers detection; paid adds management plane and SOC integrations.

Commercial alternatives

Aqua, Sysdig, CrowdStrike, SentinelOne. Vendor-managed runtime security with SOC integration, threat intelligence, and managed response.

Higher cost; lower operational burden. Suitable for orgs without dedicated security operations.

Often bundle with vulnerability scanning and admission control. Single vendor for full container security stack.

Integration patterns

Detection events flow to SIEM (Splunk, Datadog Security, Elastic SIEM). Centralised correlation with other security signals.

Auto-response via SOAR. Specific high-confidence detections trigger automated containment: pod isolation, image quarantine.

Notification to security on-call. Severity tiers; pages for critical, channels for medium, dashboard for low.

How to decide

Open-source (Falco, Tracee) for teams with security expertise and modest budget. Operational burden real but bounded.

Vendor-managed for teams without dedicated security operations. Higher cost; significantly lower operational time.

Multi-tier: Falco for basic; vendor for advanced threat hunting. Common pattern at mature security organisations.