It's a real life-saver in terms of hosting stuff
What do you like best about the product?
What I love about it is it's open source nature. By parsing logs you can block bad actors just like you would with fail2ban - but with grok patterns which are way easier to write and implement. New parsers are easily constructed and it's really easy to keep a ton of bad traffic out of your network.
What do you dislike about the product?
A bad thing about it is that you'd have to get a premium subscription in case you want more 'signals' than you share. Mostly ssh and http scenarios do although cover most of your bases.
What problems is the product solving and how is that benefiting you?
Crowdsec itself saves me a lot of CPU load by keeping nasty IP addresses at bay. I had a 15% load decrease on the hypervisor which may not sound like much. In my case it was around the CPU power that a complete Linux VM would need.