RE: That pedigree may not fill you with confidence ...
"That pedigree may not fill you with confidence seeing as Microsoft’s September patch dump fixed 129 flaws"
To be fair, it actually *does* inspire a little more confidence than you might otherwise expect. After all, presumably their tools have pro-actively uncovered most of these issues and are therefore of a decent quality.
If they were *not* putting out patches and fixes, that's when I'd worry that the fuzzing tools were poor quality as they were finding nothing (obviously a fair number of the flaws are found by others and reported to Microsoft, but I'd expect most of them were discovered in-house).