But thanks to pervasive online tracking and browser fingerprinting, the brazen liars of America may not have a say in whether their porn habits stay secret. Porn watchers everywhere are being tracked, and if software engineer Brett Thomas is right, it would be easy to out them, along with an extensive list of every clip they've viewed.

Thomas, who lives in San Francisco, recently found himself at a bar, chatting with a member of the online adult-entertainment industry. They got to talking about economics, naturally. While the porn professional insisted that collecting and selling the personal data of users who visited erotic websites wasn't part of the industry's business model, Thomas wasn't convinced.

"If you are watching porn online in 2015, even in incognito mode, you should expect that at some point your porn viewing history will be publicly released and attached to your name," Thomas proclaimed in a blog post titled ?"Online Porn Could Be the Next Big Privacy Scandal," shortly after.