Russia's and Everybody Elses Hacking

Has anybody brought up the argument that information dropped by a hacker was stolen, and thus it's truthfulness should be brought into question? I have heard none of this from the media that is, according to Republicans, supposed to be so heavily biased and Anti-Trump. If a person can hack information, then they can pick and choose, and even alter, what they release to the public. This is something that should definitely be asserted, not only by the Hilary Clinton campaign, but all Democrats and Democratic allies. The idea that we should be trusting these leaks passed on by criminals with a dubious sense of honesty is ridiculous and I think it needs to stop. If they want to hack and leak, even if they don't get caught, they should answer for their criminal behavior. At the very least, the consequences should be that their dishonest efforts should be fruitless.