I agree that large-scale machine learning is a bigger risk, but there are people who personally creep around in others' personal data.[1] Also, it doesn't need

I agree that large-scale machine learning is a bigger risk, but there are people who personally creep around in others' personal data.[1] Also, it doesn't need to be just a few people looking at your private data. One early worst-case example is Ashley Madison[2], but it's going to increasingly be a problem for society in the upcoming years, especially with the expansion of technologies like face recognition, voiceprinting, license plate cameras, etc. [1] http://www.telegraph.co.uk/technology/google/8003925/Google-engineer-fired-for-privacy-breach-after-stalking-and-harrassing-teenagers.html http://www.telegraph.co.uk/technology/google/8003925/Google-... [2] https://en.wikipedia.org/wiki/Ashley_Madison_data_breach https://en.wikipedia.org/wiki/Ashley_Madison_data_breach