The information might be viewable from the public, but there was still an expectation of privacy at the start of this. It isn't a naked person walking down the

The information might be viewable from the public, but there was still an expectation of privacy at the start of this. It isn't a naked person walking down the street, it is someone getting naked in their own home and you're peering through their window. Neither the legal status of that action nor other people also being able to see in the window makes it morally justifiable to violate the original expectation of privacy.