Falco
Runtime application self-protection (RASP) software
Container security tools
Application security software
DevSecOps software
- Features
- Ease of use
- Ease of management
- Quality of support
- Affordability
- Market presence
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- Manufacturing
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- Energy and utilities
What is Falco
Falco is an open-source runtime security tool that detects suspicious behavior in Linux hosts, containers, and Kubernetes environments by monitoring system calls and other kernel-level signals. It is used by platform, DevOps, and security teams to implement runtime threat detection and policy-based alerting for cloud-native workloads. Falco focuses on behavioral detection (for example, unexpected process execution or file access) rather than code instrumentation, and it integrates with common alerting and SIEM pipelines through outputs and plugins.
Runtime behavioral detection focus
Falco detects activity at runtime based on system behavior, which helps identify threats that bypass build-time scanning. It can flag unexpected process launches, network connections, and access to sensitive paths inside containers and on nodes. This makes it well-suited for production monitoring in Kubernetes and containerized Linux environments.
Flexible rules and outputs
Falco uses a rule engine that teams can customize to match their environment and risk tolerance. It supports multiple output channels (such as logs, webhooks, and integrations via plugins) to route alerts into existing incident workflows. This flexibility helps organizations align detections with internal SOC and DevSecOps processes.
Open-source governance and ecosystem
Falco is maintained as an open-source project under a neutral foundation, which supports community contributions and transparency of detection logic. It has a broad ecosystem of rules, integrations, and deployment patterns for Kubernetes. This can reduce vendor lock-in compared with proprietary runtime-only tooling.
Not a full RASP solution
Falco does not instrument application code or provide application-layer protections typical of RASP products. Its detections are primarily OS and container runtime oriented, so it may not identify business-logic abuse or in-app vulnerabilities without complementary tools. Organizations often pair it with other application security controls for broader coverage.
Tuning effort and alert noise
Out-of-the-box rules can generate false positives in complex environments, especially with diverse workloads and frequent deployments. Teams typically need to tune rules, create allowlists, and maintain exceptions over time. Without ongoing tuning and ownership, alert fatigue can reduce operational value.
Linux and kernel dependency constraints
Falco’s runtime visibility depends on Linux kernel telemetry (for example, eBPF or kernel module approaches depending on deployment). This can introduce compatibility and operational considerations across distributions, kernel versions, and managed Kubernetes offerings. Some environments may restrict required privileges or kernel access, limiting deployment options.
Plan & Pricing
Pricing model: Completely free / Open-source License: Apache License 2.0 (see official docs) Pricing details & notes:
- Falco is distributed as an open-source project with no subscription or usage fees. Official site states "Zero cost to start." (Official downloads, packages, and container images are available.)
- No paid tiers or commercial plans are published on the official Falco website.
Additional notes:
- Falco is a CNCF graduated, community-maintained project; all core artifacts (binaries, container images, Helm charts, docs) are provided by the project and are free to use.
Seller details
The Falco Project
San Francisco, California, United States
2016
Open Source
https://falco.org/
https://x.com/falco_org
