Among the many factors that can elicit privacy concerns and affect privacy behavior, some are sensorial: detecting the presence of others through our senses. Human beings may be wired to react to sensorial cues and rely, in part, on them to assess the privacy ramifications of their actions....

Cryptographic access control tools for online social networks (CACTOS) allow users to enforce their privacy settings online without relying on the social network provider or any other third party. Many such tools have been proposed in the literature, some of them implemented and currently...

The success of Amazon Mechanical Turk (MTurk) as an online research platform has come at a price: MTurk exhibits slowing rates of population replenishment, and growing participants’ non-naivety. Recently, a number of alternative platforms have emerged, offering capabilities similar to MTurk...

Continued expansion of human activities into digital realms gives rise to concerns about digital privacy and its invasions, often expressed in terms of data rights and internet surveillance. It may thus be tempting to construe privacy as a modern phenomenon—something our ancestors lacked and...

Background: The security and privacy communities have become increasingly interested in results from behavioral economics and psychology to help frame decisions so that users can make better privacy and security choices. One such result in the literature suggests that cognitive disfluency...

Privacy decision making has been examined from various perspectives. A dominant “normative” perspective has focused on rational processes by which consumers with stable preferences for privacy weigh the expected benefits of privacy choices against their potential costs. More recently, an...