Mercan Topkara Ashish Kamra Mikhail J. Atallah Cristina Nita-Rotaru ViWiD : Visible Watermarking Based Defense Against Phishing. 470-483 2005 conf/iwdw/2005 IWDW http://dx.doi.org/10.1007/11551492_36 db/conf/iwdw/iwdw2005.html#TopkaraKAN05