> Really, what we are talking about is this: what if, when Zoom sent telemetry to Facebook without your authorization or knowledge apparently because they used some library and didn't realize it did that, your host firewall told you that this random application was shipping your most personal secrets directly to Mark Zuckerburg and, even better, prevented it doing so until you considered the question?

Yes, please! That would be amazing

Never used it myself, only remembering it from my thesis days about essentially the same topic. I see they made the jump away from Python to Go and I'm also somewhat surprised the project is not only still active, but appears to have matured nicely. Guess I'll have to check it out now!

Here's the initial HN discussion of OpenSnitch from 5 years ago: https://news.ycombinator.com/item?id=14245270