I'm not sure I understand what the offering is. How does: "everything is encrypted" work together with: "The Younited service automatically scans all files

I'm not sure I understand what the offering is. How does: "everything is encrypted" work together with: "The Younited service automatically scans all files for malware that you add to the cloud?" ... presumably that makes it server-side encryption in which they're reserving the right to perform some manipulation of files first (virus scanning, deduplication?)? ... but if so, how can they include the statement: "we like what dropbox and skydrive do, but where is the privacy?" Isn't this exactly what dropbox does? I presume they will use ssl to transfer the data, perhaps even encrypt it in storage after they've scanned the plaintext, but surely this is as as vulnerable to their own staff and their government as any other service?