Security is a composite system

Curious thing, internet security. Each measure on its own might not be effective, but when combined together in a smart way they can create a good impact. For example, Crowdsec allows to prevent malicious actors to go through. But it doesn’t prevent them from bashing your server with thousands of requests. They can still get through, in a manner of speaking. On the other hand, a simple rate limit will prevent this, but it won’t help you discerning between bad and good actors. Combine both of these approaches–with careful tuning–and you end up with a more sophisticated system.