Here the benefit of our multi stage tainting approach is clearly visible How this taint information is propagated throughout the system is defined in the propagation policy Later on the Win32 API was forged and a POSIX compatible subsystem was included as well The functions we provide that manipulate the taint information based on virtual addresses of course take this into account plasmatronFirst we discuss the general anatomy of the objects and then continue with threads and processes that are only special incarnations of objects , the Browser Helper Objects falls into this category To this end we extended the set of micro operations that Qemu uses to provide this functionality We believe that signature based detection techniques suffer from the inability to detect previously unknown threats and that a behavior-based approach is able to overcome this shortcoming plasmatronBut as soon as the API translates the string to Unicode representation, address tainting is needed to cover the lookup in the Unicode tables For example the BHO mechanism that was discussed before can be seen as a hook Since the changes we introduced to Qemu are only minor, it is easy to keep TQAna in sync with the evolving Qemu project, in order to benefit from any progress the upstrem version experiences ion source this can only happen from code that is executed in kernel space