This is a PDF file of a chapter taken from a book that contains essays on many issues that arise from "big data." This chapter specifically pertains to our privacy versus security debate because it provides reasons as to why bulk data collection does not work as well as alternative options to mass surveillance.
To any future college students: Be careful of what you type on the internet or reveal about yourself in an online forum. Despite the shocking revelations of the size and scope of the government's surveillance programs revealed by Edward Snowden, the majority of Americans don't understand the kind of information the government has on them, have taken few steps to protect their online data, and believe that such programs don't go far enough in tackling terrorism. Ironically, these same Americans also overwhelmingly believe that consumers have lost protection of their data to companies who have used their clients' privacy as a commodity. I would advise you to be careful of what you post online, and follow a few steps, such as passwords, encryption, and clearing your cookies, to help protect at least some of your data online and allow you to remain private. These programs continue to this day, and it's important that you protect what little privacy remains.