We examine several ad-hoc pairing protocols that strengthen their radio exchanges with additional transmissions over another channel, for example a screen showing graphically encod...
Existing Web browsers handle security errors in a manner that often confuses users. In particular, when a user visits a secure site whose certificate the browser cannot verify, th...
Protecting users’ privacy is essential for turning networks and services into trustworthy friends. Many privacy enhancing techniques, such as anonymous e-cash and mix-nets, have...