Get off it -- that search warrant was based on a reporter posting a link to data. The underlying issue is that he is being punished for engaging in 1st Amendment activity, the ultimate basis for his punishment doesn't matter to the Feds.
Think of it this way: say you decided to install Chrome on your computer, so you download it from the official location and install it. Then a warrant is issued so the cops can examine your laptop to figure out if you installed Chrome. You're thinking "WTF?" that's not a crime and so you give them some lip. Now you're fucked. They hated you because of some random reason, but now they get to punish you -- that it is for some random reason doesn't matter. That's what happened here -- the Feds were out to get him and they got him.