The Australasian Information Security Conference 2013 is held as part of Australasian Computer Science Week. ACSW-AISC promotes research on all aspects of information security. Our goal is to improve communication between security practitioners and researchers. For more than a decade, AISC or its predecessor AISW has been one of the streams of the Australasian Computer Science Week (ACSW). We will continue this tradition at ACSW 2013, in Adelaide from 29 January to 1 February. We welcome submissions from academic and industrial researchers on all practical and theoretical aspects of information security.