You've fuzzed your favorite application and found a mountain of crashes, now what? BitBlaze is an open source binary analysis platform which can perform whole system taint tracing, dynamic symbolic execution, as well as static analysis. Using BitBlaze, it is possible to determine, upon application crash, which registers and memory locations are tainted from the fuzzed input and in what ways they are used. Furthermore, this taint information can give a level of understanding on what went wrong with the program and why, reducing crash analysis from days to hours and sometimes minutes. In this talk, we present BitBlaze as well as walk through real life case studies of its use.