Hi all, Just a quick note - I would like to announce the availability of our general-purpose closed loop protocol-blind fuzzer for open source C code: http://code.google.com/p/bunny-the-fuzzer/ Bunny uses automatically generated C-level instrumentation to focus on runtime inputs observed to trigger new control flow paths or interesting parameter variations - and to bail out early on dead-end fuzzing routes. This notably improves flow path coverage and overall quality of the fuzzing process. The tool is designed to maintain a near-native execution speed, and requires virtually no setup, even when dealing with complex and large codebases. This is probably a major improvement over previous closed loop solutions. The software should be reasonably stable, though some bugs might still need to be ironed out. Current documentation is available here: http://code.google.com/p/bunny-the-fuzzer/wiki/BunnyDoc Cheers, /mz