If you want to share files with someone but don’t feel comfortable letting them copy, print, or download the file, you can use this nifty Google Drive feature to your advantage. Upload a file to Google Drive, and hit the Share icon in the top-right. Now hit the gear icon in the top-right of the sharing permissions window to reveal two new options.
Uncheck Viewers and commenters can see the option to download, print, and copy. The other option lets you stop editors of the file from changing permissions and sharing the file with others, so go right ahead and uncheck that, too.