I'd say that by simply copying and reading those emails and financial records you haven't done any harm. If you've used the knowledge gained from those document

I'd say that by simply copying and reading those emails and financial records you haven't done any harm. If you've used the knowledge gained from those documents to deprive someone of their finances(theft) or any such malicious action I'd say you've harmed the owner of these documents. Disclaimer: I do not condone piracy, I just believe you've made a logical fallacy.