Explore the vulnerabilities of mobile device wired interfaces in this Black Hat USA 2013 conference talk. Discover how manufacturers often multiplex several wired interfaces onto a single connector, leaving some test and development interfaces enabled in shipped devices. Learn how to gain shell access on a popular mobile phone through its USB port without using a USB connection. Gain insights from security researchers Michael Ossmann and Kyle Osborn as they demonstrate these techniques and introduce an open-source tool for investigating multiplexed wired interfaces. This hour-long presentation provides valuable information for cybersecurity professionals and mobile device enthusiasts interested in understanding and addressing potential attack surfaces in wired connections.