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    I’m not very security conscious, but this is a kernel extension that is possibly not open-source. I say possibly because the Github page and an older blog post are both 404:

    http://www.zdziarski.com/blog/?p=6178 https://github.com/jzdziarski/littleflocker

    I imagine this was open-source at one point and then it became closed-source?

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      I don’t know if it was ever open source, but I personally don’t have any reason not to trust the author:

      It’s modeled after Little Snitch, which is also closed source and is rather popular. I imagine Zdziarski made an initial open source version, got a strong positive reaction to it, and decided he could spend more time polishing it up to sell as a product.