> Each program will make a defind set of syscalls to achieve its > objective. Now idea is to watch syscalls that a program is supposed to > make during its run time. A database which describes the syscalls that a > program can make is called behavior model of the program. Lets assume we > can generate a behavior model which perfectly describes an application. > Now any deviation from behavior model of program essentially indicates > an intrusion at real time. Thus a corrective action can be taken. Nothing new under the sun: http://imsafe.sourceforge.net/inside.htm ftp://ftp.cs.unm.edu/pub/forrest/uss-2000.ps And even published research: http://citeseer.ist.psu.edu/13864.html http://citeseer.nj.nec.com/445166.html There are conspicuous citations in the two papers above. As for the mimicry attacks against this concept, an URL has already been posted Cordialmente, Stefano Zanero
