[huggyface]

That is, "it's the user's fault for trusting me/us."

No, it's the user's fault for trusting any given site more than necessary. People outraged that LinkedIn leaked the same credentials that they use for PayPal, for instance. That is ABSOLUTELY a user issue. LinkedIn, and many before, screwed up. People aren't upset as much about the root screwup though (I mean just reset your password and move on), but that, yet again, it reveals that people rashly and irresponsibly reuse credentials en masse.

Your analogies -- if we accept that software should be built like a bridge (which is ridiculous) -- is misplaced. LinkedIn, like a bridge, should be built well to the limits of its purpose. If a bridge has a defect, however, it shouldn't cause my house to fall down as a consequence.