[sweeneyrod]

I don't think memory safety bugs are the most widespread kind at all, unless you add the qualification "in languages with manual memory management".

[steveklabnik]

I imagine what they're alluding to is that it seems like most of the security bugs are memory-safety related. The number is about 70%, and has been replicated independently at a number of places.

That is of course a very different thing!

[pdimitar]

Yeah, seems I messed up some words. :(

But yes, I meant the majority of the security bugs indeed.