Microsoft has been riding the fence between marketing a concept of "trustworthy computing" and delivering a product that caters to the least common technically proficient denominator. Most products have been specifically designed to allow anyone who can click "Next" to perform a successful installation, but when it comes to their defense of insecure default software settings, they have a matter-of-fact way of telling everyone that they should know better.
While MS may eventually own up to newly discovered defects, what gets me is this attitude thing.
It is hard to imagine such an attitude, coming from the side we are on -- the side of honest businessmen.
But considering we're talking about a criminal enterprise who has had to break the law to sell their products, I think it makes perfect sense. They don't get make their money filling customer needs, they make their money thru coercion.
So their response to product defects is to try an coerce the people who know about the defects into not informing anyone of the product defects.
That's MS's "marketing" approach.