Option to block spontaneous file sharing
I recently received a shared document from someone who I had never heard of, living on the other side of the world. The only point of them sending the document was to include a cover note, which appeared to be offering to help me find prostitutes or drugs via Craigslist. In effect OneDrive is functioning as a vector for spam. I would like to be able to set a flag to say that only people on an approved list can share files with me.