Sudhir Aggarwal Jasbinder Bali Zhenhai Duan Leo Kermes Wayne Liu Shahank Sahai Zhenghui Zhu The Design and Development of an Undercover Multipurpose Anti-spoofing Kit (UnMask). 141-150 2007 ACSAC http://doi.ieeecomputersociety.org/10.1109/ACSAC.2007.47 conf/acsac/2007 db/conf/acsac/acsac2007.html#AggarwalBDKLSZ07