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Crowdsec
Let's make the Internet safer, together.
Table of Contents
Crowdsec - 2026 Pricing, Features, Reviews & Alternatives
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Crowdsec overview
What is Crowdsec?
The CrowdSec project aims at providing a crowdsourced based approach to common infrastructure defense problems. It does so by distributing a free & open-source software allowing to protect yourself and share information about malevolent actors within its user network.
CrowdSec could be perceived as modern Fail2ban, thought for Cloud and container based infrastructures. Mainly, it’s using a decoupled approach (detect here, remedy there) and an inference engine that leverages leaky buckets, YAML & Grok patterns to identify aggressive behaviors. It acquires signals from various data sources like logs or cloud trails, kafka, etc., normalizes them, enriches them to apply heuristics and triggers a bouncer to deal with the threat, if need be.
But the real endgame is the Reputation engine.
It basically captures all signals sent by all CrowdSec instances to curate and establish a reliable IP blacklist, that is constantly redistributed to the network members, in order to achieve a form of Digital Herd Immunity. An IP caught aggressing WordPress sites will quickly be banned by all members using CrowdSec and subscribing to the WordPress defense collection.
Key benefits of using Crowdsec
- Stateless & Decoupled: By decoupling detection (agent) and remediation (bouncer), CrowdSec doesn’t interrupt your data streams nor creates any single point of failure. It can fit any serverless, cloud-based, VM or bare-metal context in one (agent) to one (bouncer), one to many, many to one, and many to many typologies.
- High performance: Written in Golang, CrowdSec is 60x faster than its predecessor (Fail2ban) and can parse massive amounts of logs in no time. Agents can read log files, SIEM events, through a network socket and can be used in high throughput networks. For CPU & RAM-constrained assets, bouncers can just make very light API calls.
- Observability: Dashboards are great steering tools. CrowdSec is instrumented with Metabase & Prometheus to help you make smarter investments of both time & money and better defend yourself. Compliance reporting like PCI-DSS, ISO, GDPR are also on our roadmap.
- Multilayer & IPV6 ready: No matter if your servers or attackers are using IPV4 or IPV6 addresses, CrowdSec will do the job. This next-gen HIDS has been designed to not only deal with IPs but also with user sessions and more business-oriented layers.
- Ease of use: CrowdSec is designed and developed by former pentesters, SecOps & DevOps to be a fire & forget, easy to deploy, automate, configure and maintain software. This is what CrowdSec is about: bringing security to the largest number.
- GDPR Compliant: Sharing is caring but privacy matters even more. We collect the very strict minimum in order to be GDPR compliant. Hence, we never export your logs and the only data sent for curation are a timestamp, the aggressive IP, and the scenario used in the attack.
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Crowdsec FAQs
Crowdsec has the following pricing plans:
Pricing model: Free, Subscription, Open Source
Free Trial: Available | (No Credit Card required)
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Q. Who are the typical users of Crowdsec?
Crowdsec has the following typical customers:
Non Profit, Small Business
Q. What languages does Crowdsec support?
Crowdsec supports the following languages:
Arabic, English, French, Russian, Spanish
Q. Does Crowdsec offer an API?
No, Crowdsec does not have an API available.
Q. What level of support does Crowdsec offer?
Crowdsec offers the following support options:
Email/Help Desk, FAQs/Forum, Phone Support, Chat, 24/7 (Live rep)