This is the only article I've come across with a statement (and link) from the vendor who clarifies that only one file was downloaded by a Sanders' staffer (presumably the one who was fired). It's crazy how many articles I had to sift through to find it. No one seems interested in reporting the facts.

This goes to Debbie Wasserman-Schulz' offices, which also goes directly to a staff member. When the phone rings constantly, it clogs their inboxes, which they have to deal with before they can get much else done.