While the social part is not there, the technology is.

I subscribe to rule groups through hostblocker.app, which pulls HOSTS files from different known websites and compile them into a .lsrules file which Little Snitch can use.

While I cannot vouch for the website's underlying code-I did not write it and I can not find an open source implementation-It only provides rules and I can edit any rule group to my liking after subscribing to it.

That would introduce a major attack vector. One bad actor could introduce a rule that allows their malware to work.

No, as long as it is just outgoing ones or only blocking ones. Most people do not have any filtering of outgoing traffic.

I think you misunderstand the purpose of Little Snitch. The entire product is to warn you about outgoing connections. One of the use cases of that is seeing if a random app is connecting to an unknown host.

If you allowed crowdsourced rules, someone could sneak in a rule that says to allow their random app to connect to a random host, which is how malware exfiltrates your private data.

TIL. Thanks. Yes, for whitelisting it does not work.

Back when I was using OSX and Little Snitch, first user experience was horrible. I reinstalled OSX and installed Little Snitch first, and went to install app by app after running it, and got a slightly better experience. But, requires a reinstall of your OS (or maybe creating a new user will be enough)

little snitch supports blocklists ublock origin supports. it's a bit obscure feature but easy to setup.