Eugene Lim - You Have One New Appwntment - Hacking Proprietary iCalendar Properties.pdf
https://media.defcon.org/DEF%20CON%2030/DEF%20CON%2030%20presentations/Eugene%20Lim%20-%20You%20Have%20One%20New%20Appwntment%20-%20Hacking%20Proprietary%20iCalendar%20Properties.pdf