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Falco

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Detect runtime threats in containers and Kubernetes

SecurityCloud & InfrastructureMonitoringContainer Orchestration
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Reviews onG2
3 reviews tracked

The Bottom Line

Entry price

Free, no paid tier

Biggest pro

Runtime security

Biggest con

Learning curve

TL;DR - Falco

  • Falco is an open-source runtime security tool for Kubernetes and containers
  • It detects abnormal behavior and security threats using kernel-level monitoring
  • Completely free and open-source, with commercial support available
Pricing: Free forever
Best for: Individuals & startups

What is Falco?

Editorial review
Falco detects runtime threats in containers and Kubernetes. Monitor system calls, detect anomalies, alert on suspicious behavior-security visibility into what's actually happening in your clusters. The detection rules are community-maintained. The overhead is minimal. Integration with security tools is straightforward. Kubernetes security teams use Falco for runtime threat detection in containerized environments.

Available on: Linux

how we evaluateSourcefalco.org ↗

Pros & Cons

Pros

  • Runtime security
  • Kubernetes native
  • CNCF graduated
  • Good detection
  • Open source

Cons

  • Learning curve
  • Rule writing complex
  • Resource overhead
  • Alert fatigue risk
  • Setup complexity

Ratings Across the Web

4(3 reviews)
G23 reviews
4/5

Ratings aggregated from independent review platforms. Learn more

Key Features

Runtime securityKubernetes nativeThreat detectionRules engineOpen sourceCNCF project

Pricing Plans

Pricing checked Jul 27, 2026

Most Popular

Free

Free

Open source

  • Runtime security
  • Kubernetes native
  • eBPF based
  • CNCF project
Calculate your costView full pricing

Is Falco worth the price?

95/100

Falco's pricing is exceptionally generous as it is entirely free and open-source.

This makes it an incredibly fair and accessible option compared to proprietary solutions. It is best for organizations of all sizes looking for robust cloud-native runtime security without any direct cost.

Hidden Costs & Gotchas

Requires internal expertise for deployment/maintenance

Potential need for commercial support services

Integration effort with existing security tools

How Falco Compares to Competitors

Unlike commercial runtime security platforms such as Sysdig Secure or Aqua Security, Falco offers its core capabilities completely free. While competitors might bundle additional features like vulnerability scanning or compliance, Falco provides essential runtime threat detection at no direct software cost, making it a highly cost-effective starting point.

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Best Falco Alternatives

Top alternatives based on features, pricing, and user needs.

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Cloud security that learns and alerts on what matters

4.6
Aqua Security logo
Aqua SecurityPaid

Cloud native security for containers and Kubernetes

4.2
Decart logo
DecartPaid

Ultra-optimized infrastructure for real-time physical AI

4.3
Cilium logo
CiliumFreemium

Cloud native networking, observability, and security powered by eBPF.

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Still deciding?

Most buyers shortlist 2 or 3 tools before committing. Pull a side-by-side comparison or browse the full alternatives shortlist below.

Falco vs LaceworkHead-to-head: features, pricing, who winsFalco vs Aqua SecurityHead-to-head: features, pricing, who winsFalco vs DecartHead-to-head: features, pricing, who wins

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Falco FAQ

How does Falco detect runtime threats in containerized environments?

Falco detects runtime threats by monitoring system calls and other activity within containers and Kubernetes. It identifies anomalies and alerts on suspicious behavior to provide security visibility into cluster operations.

Which teams benefit most from using Falco?

Kubernetes security teams primarily use Falco for runtime threat detection in containerized environments. It is designed for organizations that need to monitor what is actually happening within their clusters.

What kind of trade-offs should users consider when implementing Falco?

Users should be aware of a potential learning curve and the complexity involved in writing detection rules. There is also a risk of alert fatigue and some setup complexity associated with its deployment.

How is Falco priced?

Falco is free to use, as it is an open-source project. There is no paid plan required to utilize its features for runtime threat detection.

Can Falco integrate with existing security tools?

Yes, integration with other security tools is straightforward, allowing Falco to fit into existing security workflows. It provides good detection capabilities within a Kubernetes-native framework.

How does Falco compare to Aqua Security for container security?

Falco is an open-source, CNCF-graduated project focused on runtime threat detection with community-maintained rules and minimal overhead. Aqua Security offers a broader suite of container security features, whereas Falco specializes in real-time monitoring of system calls and suspicious behavior.

Source: falco.org

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