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by ants_everywhere 757 days ago
If an algorithm is looking through private stuff and making a decision based on it or is sending signals where the signal depends on the private stuff, then it's pretty much by definition leaking private information.

An algorithm that leaked no private information would not be useful to a business. It would do a bunch of computation and then throw it away. So realistically anything that looks at private information is privacy-relevant.

That includes even just the email headers. To quote the former head of the NSA "We Kill People Based on Metadata" https://abcnews.go.com/blogs/headlines/2014/05/ex-nsa-chief-...

You can have debates about how much private information should be leaked and for what purposes. But I don't think having a threshold like "it's all private unless another human reads it" is a good way to think about the issue.