It probably is, but it would be near-impossible for a respectable company to claim that they weren't specifically trying to spoof it. With the current OS X pas

It probably is, but it would be near-impossible for a respectable company to claim that they weren't specifically trying to spoof it. With the current OS X password prompt being a benign looking window, Dropbox (or others) can easily say they're just "following standard UI patterns" or something like that.