Alexander Heitzmann Bernardo Palazzi Charalampos Papamanthou Roberto Tamassia Effective Visualization of File System Access-Control. 18-25 2008 VizSEC http://dx.doi.org/10.1007/978-3-540-85933-8_2 conf/vizsec/2008 db/conf/vizsec/vizsec2008.html#HeitzmannPPT08